CN108982123A - Body stiffness tests confidence level method for improving - Google Patents

Body stiffness tests confidence level method for improving Download PDF

Info

Publication number
CN108982123A
CN108982123A CN201811001927.1A CN201811001927A CN108982123A CN 108982123 A CN108982123 A CN 108982123A CN 201811001927 A CN201811001927 A CN 201811001927A CN 108982123 A CN108982123 A CN 108982123A
Authority
CN
China
Prior art keywords
behind
measurement point
point
obligatory
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811001927.1A
Other languages
Chinese (zh)
Inventor
张永军
何鹏坤
鄢子超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chery Automobile Co Ltd
Original Assignee
Chery Automobile Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chery Automobile Co Ltd filed Critical Chery Automobile Co Ltd
Priority to CN201811001927.1A priority Critical patent/CN108982123A/en
Publication of CN108982123A publication Critical patent/CN108982123A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00Testing of vehicles
    • G01M17/007Wheeled or endless-tracked vehicles
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings

Abstract

The invention discloses a kind of body stiffness to test confidence level method for improving, comprising steps of the left side body stiffness test value S of S1, acquisition vehicle bodyl;S2, the right side bodies stiffness test value S for obtaining vehicle bodyr;S3, S is takenlAnd SrAverage value, obtain final body stiffness test value S;Wherein, in step S1, the measurement point behind measurement point and left side second after first on the left of arrangement on vehicle body, obligatory point and measurement point behind measurement point behind left side first and left side second are in obligatory point is located at behind left side first after measurement point and left side second between measurement point on parallel same straight line and behind left side with X behind the left side on vehicle body.Body stiffness of the invention tests confidence level method for improving, by increasing a measurement point near rear obligatory point, interpolation processing is carried out to the result of test, so that the shift value at rear obligatory point is closer to its true shift value, to improve the test confidence level of body stiffness, and it is easy to operate.

Description

Body stiffness tests confidence level method for improving
Technical field
The invention belongs to automobile technical fields, specifically, the present invention relates to a kind of body stiffness test confidence levels to be promoted Method.
Background technique
With the rapid development of the automotive industry, automobile plays in people's daily life as a kind of vehicles Important role.Requirement of the people for automobile not only rests on the level of walking-replacing tool, durable to automobile, the performances such as NVH Requirement it is also higher and higher.As an important indicator for measuring automotive performance, vehicle body is turned round for body torsional rigdity and bending stiffness Turn rigidity and bending stiffness needs to meet certain target call, good durable, the NVH performance that just can guarantee that vehicle has.
Judge for body stiffness mainly has two kinds of approach of experimental test and CAE analysis.But for experimental test Speech, the factor for influencing its test result is more, such as testing method, experimental enviroment, the operation etc. of experimental test personnel.According to According to existing test method, the test value and assay value of body stiffness are there are biggish error, the range judged more than empirical value. Cause true body stiffness to be amplified, can not really reflect body stiffness.
The test method of existing body stiffness is that the body stiffness test value that measurement is obtained two sides is averaged, as most Whole body stiffness test value S.In existing test method, preceding measurement point and rear measurement point nearby only arrange a measurement Point.Near preceding measurement point, the reason of because of moulding and structure, more measurement points can not be arranged;Obligatory point nearby only chooses one afterwards A measurement point.The position selection of measurement point is very random simultaneously, not can truly reflect the displacement at rear obligatory point, causes final Body stiffness test result confidence level is poor.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention provides a kind of vehicle Body stiffness test confidence level method for improving, it is therefore an objective to promote the confidence level of body stiffness test result.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that: body stiffness test confidence level promoted Method, comprising steps of
S1, the left side body stiffness test value S for obtaining vehicle bodyl
S2, the right side bodies stiffness test value S for obtaining vehicle bodyr
S3, S is takenlAnd SrAverage value, obtain final body stiffness test value S;
Wherein, in step S1, the measurement point behind measurement point and left side second after first on the left of arrangement on vehicle body, on vehicle body Behind left side obligatory point and measurement point behind measurement point behind left side first and left side second in X on parallel same straight line and Obligatory point is located at behind left side first after measurement point and left side second between measurement point behind left side.
Behind the left side first behind measurement point and the left side behind the distance between obligatory point and left side second measurement point and The distance between obligatory point is identical behind left side.
In the step S1, the left side body stiffness test value S of vehicle body is obtainedlProcess comprising steps of
S11, the measurement point behind measurement point and left side second behind preceding measurement point, left side first on the left of arrangement on vehicle body;
S12, load is applied to vehicle body;
S13, the displacement D for obtaining measurement point before left sidelfl, behind left side first measurement point displacement Dlr1It is surveyed with behind left side second Measure the displacement D of pointlr2
S14, to the displacement D of measurement point behind left side firstlr1With the displacement D of measurement point behind left side secondlr2Carry out interpolation meter It calculates, obtains the displacement D behind left side at obligatory pointlr
S15, according to the displacement D of measurement point before left sidelfTorsion angle before the left side of measurement point before on the left of calculatinglf, according to The displacement D of obligatory point behind left sidelrThe left side retrotorsion angle θ of obligatory point after on the left of calculatinglr
S16, according to torsion angle before left sidelfWith left side retrotorsion angle θlr, left side body stiffness test value S is calculatedl
In the step S11, the distance between measurement point and obligatory point behind the left side are behind the left side first 100mm, the distance between obligatory point is 100mm behind measurement point and the left side behind the left side second, is measured behind left side first Measurement point is arranged in the middle position in the Y-direction of the bottom surface of left side floor side member after point and left side second.
It in the step S12, is constrained at obligatory point by fixture behind the left side on vehicle body, before the left side on vehicle body Apply load at shock absorber bearing installation point.
In step S2, the measurement point behind measurement point and right side second after first on the right side of arrangement on vehicle body, the right side on vehicle body Afterwards obligatory point and measurement point behind measurement point behind right side first and right side second in X on parallel same straight line and right side Obligatory point is located at behind right side first after measurement point and right side second between measurement point afterwards.
Behind the right side first behind measurement point and the right side behind the distance between obligatory point and right side second measurement point and The distance between obligatory point is identical behind right side.
In the step S2, the right side bodies stiffness test value S of vehicle body is obtainedrProcess comprising steps of
S21, the measurement point behind measurement point and right side second behind preceding measurement point, right side first on the right side of arrangement on vehicle body;
S22, load is applied to vehicle body;
S23, the displacement D for obtaining measurement point before right siderf, behind right side first measurement point displacement Drr1It is surveyed with behind right side second Measure the displacement D of pointrr2
S24, to the displacement D of measurement point behind right side firstrr1With the displacement D of measurement point behind right side secondrr2Carry out interpolation meter It calculates, obtains the displacement D behind right side at obligatory pointrr
S25, according to the displacement D of measurement point before right siderfTorsion angle before the right side of measurement point before on the right side of calculatingrf, according to The displacement D of obligatory point behind right siderrThe right side retrotorsion angle θ of obligatory point after on the right side of calculatingrr
S26, according to torsion angle before right siderfWith right side retrotorsion angle θrr, right side bodies stiffness test value S is calculatedr
In the step S21, the distance between measurement point and obligatory point behind the right side are behind the right side first 100mm, the distance between obligatory point is 100mm behind measurement point and the right side behind the right side second, is measured behind right side first Measurement point is arranged in the middle position in the Y-direction of the bottom surface of right side floor side member after point and right side second.
It in the step S22, is constrained at obligatory point by fixture behind the right side on vehicle body, before the right side on vehicle body Apply load at shock absorber bearing installation point.
Body stiffness of the invention tests confidence level method for improving, by increasing a measurement point near rear obligatory point, Interpolation processing is carried out to the result of test, so that the shift value at obligatory point is closer to its true shift value afterwards, to improve The test confidence level of body stiffness, and it is easy to operate.
Detailed description of the invention
Fig. 1 is body stiffness measurement point position view;
Fig. 2 is the partial enlargement diagram of rear measurement point;
Label in above-mentioned figure is equal are as follows: 1, measurement point behind left side first;2, obligatory point behind left side;3, it is measured behind left side second Point;4, left side floor side member;5, left side front damper seat installation point;6, measurement point before left side;7, left side front longitudinal beam;8, right side first Measurement point afterwards;9, obligatory point behind right side;10, measurement point behind right side second;11, right side floor side member;12, front damper seat in right side is pacified It decorates;13, measurement point before right side;14, right side front longitudinal beam.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to design of the invention, technical solution Solution, and facilitate its implementation.
As depicted in figs. 1 and 2, the present invention provides a kind of body stiffness to test confidence level method for improving, including following Step:
S1, the left side body stiffness test value S for obtaining vehicle bodyl
S2, the right side bodies stiffness test value S for obtaining vehicle bodyr
S3, S is takenlAnd SrAverage value, obtain final body stiffness test value S.
Wherein, in step S1, the measurement point behind measurement point and left side second after first on the left of arrangement on vehicle body, on vehicle body Behind left side obligatory point and measurement point behind measurement point behind left side first and left side second in X to (X of vehicle coordinate system to) phase Obligatory point is located at behind left side first after measurement point and left side second between measurement point on parallel same straight line and behind left side.
Specifically, as depicted in figs. 1 and 2, measurement point is arranged in vehicle body behind measurement point and left side second behind left side first Left side floor side member bottom surface on, i.e., measurement point after obligatory point is disposed about two behind left side, behind left side first measurement point with Measurement point is identical as the distance between obligatory point behind left side behind the distance between obligatory point and left side second behind left side.
In above-mentioned steps S1, the left side body stiffness test value S of vehicle body is obtainedlProcess comprise the following steps that
S11, the measurement point behind measurement point and left side second behind preceding measurement point, left side first on the left of arrangement on vehicle body;
S12, load is applied to vehicle body;
S13, the displacement D for obtaining measurement point before left sidelfl, behind left side first measurement point displacement Dlr1It is surveyed with behind left side second Measure the displacement D of pointlr2
S14, to the displacement D of measurement point behind left side firstlr1With the displacement D of measurement point behind left side secondlr2Carry out interpolation meter It calculates, obtains the displacement D behind left side at obligatory pointlr
S15, according to the displacement D of measurement point before left sidelfTorsion angle before the left side of measurement point before on the left of calculatinglf, according to The displacement D of obligatory point behind left sidelrThe left side retrotorsion angle θ of obligatory point after on the left of calculatinglr
S16, according to torsion angle before left sidelfWith left side retrotorsion angle θlr, left side body stiffness test value S is calculatedl
In above-mentioned steps S11, the distance between measurement point and obligatory point behind left side are 100mm, left side behind left side first The distance between measurement point and obligatory point behind left side are 100mm after second, are measured behind measurement point and left side second behind left side first Point is arranged in the middle position in the Y-direction (Y-direction of vehicle coordinate system) of the bottom surface of left side floor side member.It is upward in X, behind left side about Vertical range after beam spot and left side first behind measurement point and left side second between measurement point is 100mm, is surveyed behind left side first Measurement point is distributed in the middle position of left side floor side member in Y-direction after amount point and left side second.Measurement point after two on the left of vehicle body Position reasonable definition so that layout position be easier arrange measuring instrument, be further ensured that test operation feasibility.
In above-mentioned steps S11, by measurement point before left side be arranged in left side front longitudinal beam bottom surface Y-direction on center meta position It sets, measurement point is arranged in the upward position X and the position of left side front damper seat installation point and is consistent before left side, surveys before left side Amount point and left side front damper seat installation point are in X to parallel same straight line, measurement point and before left side before left side The front of shock absorber bearing installation point, obligatory point is located at the rear of left side front damper seat installation point, left side upward in X behind left side Measurement point behind obligatory point and left side second behind measurement point, left side behind preceding measurement point, left side front damper seat installation point, left side first To be sequentially arranged, measurement point and left side front damper seat installation point are located at the front end of vehicle body (before the front end refers to setting before left side One end of wheel), measurement point position (should in the rear end of vehicle body behind obligatory point and left side second behind measurement point, left side behind left side first Rear end refers to one end of setting rear wheel).Left side floor side member is located at the rear of left side front longitudinal beam, indulges before left side floor side member and left side Beam is along X to extension.In Y-direction, left side floor side member and left side front longitudinal beam are located at the same side of vehicle body, the i.e. left side of vehicle body.
In above-mentioned steps S12, constrained at obligatory point by fixture behind the left side on vehicle body, the left side on vehicle body Apply load at front damper seat installation point, left side front damper seat installation point is load(ing) point, left side front damper seat installation point For the position for installing front damper seat on vehicle body, a front damper is installed on front damper seat.
In above-mentioned steps S13, the displacement D of measurement point before left side is read respectively by displacement sensorlfl, left side first The displacement D of measurement point afterwardslr1With the displacement D of measurement point behind left side secondlr2
In above-mentioned steps S14, to the displacement D of measurement point behind left side firstlr1With the displacement of measurement point behind left side second Dlr2Interpolation calculation is carried out, the displacement D behind left side at obligatory point is obtainedlr, by being measured after increasing by one near rear obligatory point Point, and interpolation processing is carried out to the displacement result of measurement point behind two left sides, the result of interpolation calculation is obligatory point behind left side The displacement D at placelr, so that the body stiffness test value that the shift value at rear obligatory point closer to its true shift value, obtains Closer to its true value, to improve the test confidence level of body stiffness.
In above-mentioned steps S16, according to torsion angle before the left side of acquisitionlfWith left side retrotorsion angle θlr, it is used in step S12 The load value of middle application is divided by torsion angle before left sidelfWith left side retrotorsion angle θlrBetween difference, it is rigid just to obtain left side body Spend test value Sl
Test method on the right side of vehicle body is identical as the test method on the left of vehicle body, in above-mentioned steps S2, the cloth on vehicle body Set behind right side first measurement point behind measurement point and right side second, behind the right side on vehicle body behind obligatory point and right side first measurement point and Measurement point is in obligatory point is located at measurement point behind right side first on parallel same straight line and behind right side with X behind right side second And behind right side second between measurement point.
As depicted in figs. 1 and 2, measurement point is indulged after being arranged in the right side of vehicle body behind measurement point and right side second behind right side first On the bottom surface of beam, i.e., measurement point after obligatory point is disposed about two behind right side is constrained behind measurement point and right side behind right side first Measurement point is identical as the distance between obligatory point behind right side after the distance between point and right side second, obligatory point and left side behind right side Obligatory point is on the same straight line parallel with Y-direction afterwards, behind right side first behind measurement point and left side first measurement point in Y To on parallel same straight line, behind right side second behind measurement point and left side second measurement point in parallel with Y-direction same On straight line.
In above-mentioned steps S2, the right side bodies stiffness test value S of vehicle body is obtainedrProcess comprise the following steps that
S21, the measurement point behind measurement point and right side second behind preceding measurement point, right side first on the right side of arrangement on vehicle body;
S22, load is applied to vehicle body;
S23, the displacement D for obtaining measurement point before right siderf, behind right side first measurement point displacement Drr1It is surveyed with behind right side second Measure the displacement D of pointrr2
S24, to the displacement D of measurement point behind right side firstrr1With the displacement D of measurement point behind right side secondrr2Carry out interpolation meter It calculates, obtains the displacement D behind right side at obligatory pointrr
S25, according to the displacement D of measurement point before right siderfTorsion angle before the right side of measurement point before on the right side of calculatingrf, according to The displacement D of obligatory point behind right siderrThe right side retrotorsion angle θ of obligatory point after on the right side of calculatingrr
S26, according to torsion angle before right siderfWith right side retrotorsion angle θrr, right side bodies stiffness test value S is calculatedr
In step S21, the distance between obligatory point is 100mm behind measurement point and right side behind right side first, behind right side second The distance between obligatory point is 100mm behind measurement point and right side, and measurement point is arranged behind measurement point and right side second behind right side first Middle position in the Y-direction of the bottom surface of right side floor side member.
It in step S22, is constrained at obligatory point by fixture behind the right side on vehicle body, damping before the right side on vehicle body Apply load at device seat installation point.
In above-mentioned steps S21, the distance between measurement point and obligatory point behind right side are 100mm, right side behind right side first The distance between measurement point and obligatory point behind right side are 100mm after second, are measured behind measurement point and right side second behind right side first Point is arranged in the middle position in the Y-direction of the bottom surface of right side floor side member.It is upward in X, behind right side behind obligatory point and right side first Vertical range after measurement point and right side second between measurement point is 100mm, behind right side first behind measurement point and right side second Measurement point is distributed in the middle position of right side floor side member in Y-direction.The position reasonable definition of measurement point, makes behind two, vehicle body right side Must layout position more easily arrangement measuring instrument, be further ensured that test operation feasibility.
In above-mentioned steps S21, by measurement point before right side be arranged in right side front longitudinal beam bottom surface Y-direction on center meta position It sets, measurement point is arranged in the upward position X and the position of right side front damper seat installation point and is consistent before right side, surveys before right side Amount point and right side front damper seat installation point are in X to parallel same straight line, measurement point and before right side before right side The front of shock absorber bearing installation point, obligatory point is located at the rear of right side front damper seat installation point, right side upward in X behind right side Measurement point behind obligatory point and right side second behind measurement point, right side behind preceding measurement point, right side front damper seat installation point, right side first To be sequentially arranged.Right side floor side member is located at the rear of right side front longitudinal beam, and right side floor side member and right side front longitudinal beam are along X to extension. In Y-direction, right side floor side member and right side front longitudinal beam are located at the same side of vehicle body, the i.e. right side of vehicle body.Right side front damper seat peace It decorates and is on the same straight line parallel with Y-direction with left side front damper seat installation point, surveyed before measurement point and left side before right side Amount point is on the same straight line parallel with Y-direction.
In above-mentioned steps S22, constrained at obligatory point by fixture behind the right side on vehicle body, the right side on vehicle body Apply load at front damper seat installation point, right side front damper seat installation point is load(ing) point, left side front damper seat installation point For the position for installing front damper seat on vehicle body, a front damper is installed on front damper seat.
In above-mentioned steps S23, the displacement D of measurement point before right side is read respectively by displacement sensorrfl, right side first The displacement D of measurement point afterwardsrr1With the displacement D of measurement point behind right side secondrr2
In above-mentioned steps S24, to the displacement D of measurement point behind right side firstrr1With the displacement of measurement point behind right side second Drr2Interpolation calculation is carried out, the displacement D behind right side at obligatory point is obtainedrr, equally by being surveyed after increasing by one near rear obligatory point Point is measured, and interpolation processing is carried out to the displacement result of measurement point behind two right sides, the result of interpolation calculation constrains behind as right side Displacement D at pointrr, so that the body stiffness test value that the shift value at rear obligatory point closer to its true shift value, obtains Also closer to its true value, to improve the test confidence level of body stiffness.
In above-mentioned steps S26, according to torsion angle before the right side of acquisitionrfWith right side retrotorsion angle θrr, it is used in step S22 The load value of middle application is divided by torsion angle before right siderfWith right side retrotorsion angle θrrBetween difference, it is rigid just to obtain right side bodies Spend test value Sr
In above-mentioned steps S3, the body stiffness test value of two sides is averaged, by left side body stiffness test value Sl With right side bodies stiffness test value SrSummation is averaged, and the result of acquisition is final body stiffness test value S.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way Limitation, as long as the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out is used, or without changing It is within the scope of the present invention into the conception and technical scheme of the invention are directly applied to other occasions.

Claims (10)

1. body stiffness tests confidence level method for improving, which is characterized in that comprising steps of
S1, the left side body stiffness test value S for obtaining vehicle bodyl
S2, the right side bodies stiffness test value S for obtaining vehicle bodyr
S3, S is takenlAnd SrAverage value, obtain final body stiffness test value S;
Wherein, in step S1, the measurement point behind measurement point and left side second after first on the left of arrangement on vehicle body, the left side on vehicle body Afterwards obligatory point and measurement point behind measurement point behind left side first and left side second in X on parallel same straight line and left side Obligatory point is located at behind left side first after measurement point and left side second between measurement point afterwards.
2. body stiffness according to claim 1 tests confidence level method for improving, which is characterized in that behind the left side first The distance between measurement point and obligatory point behind left side after the distance between measurement point and obligatory point behind the left side and left side second It is identical.
3. body stiffness according to claim 1 or 2 tests confidence level method for improving, which is characterized in that the step S1 In, obtain the left side body stiffness test value S of vehicle bodylProcess comprising steps of
S11, the measurement point behind measurement point and left side second behind preceding measurement point, left side first on the left of arrangement on vehicle body;
S12, load is applied to vehicle body;
S13, the displacement D for obtaining measurement point before left sidelfl, behind left side first measurement point displacement Dlr1With measurement point behind left side second Displacement Dlr2
S14, to the displacement D of measurement point behind left side firstlr1With the displacement D of measurement point behind left side secondlr2Interpolation calculation is carried out, is obtained Displacement D after to left side at obligatory pointlr
S15, according to the displacement D of measurement point before left sidelfTorsion angle before the left side of measurement point before on the left of calculatinglf, behind left side The displacement D of obligatory pointlrThe left side retrotorsion angle θ of obligatory point after on the left of calculatinglr
S16, according to torsion angle before left sidelfWith left side retrotorsion angle θlr, left side body stiffness test value S is calculatedl
4. body stiffness according to claim 3 tests confidence level method for improving, which is characterized in that in the step S11, The distance between measurement point and obligatory point behind the left side are 100mm, measurement point behind the left side second behind the left side first It is 100mm with the distance between obligatory point behind the left side, measurement point is arranged in behind measurement point and left side second behind left side first Middle position in the Y-direction of the bottom surface of left side floor side member.
5. body stiffness according to claim 3 or 4 tests confidence level method for improving, which is characterized in that the step S12 In, it is constrained at obligatory point by fixture behind the left side on vehicle body, is applied at the left side front damper seat installation point on vehicle body Load lotus.
6. body stiffness according to any one of claims 1 to 5 tests confidence level method for improving, which is characterized in that step S2 In, the measurement point behind measurement point and right side second after first on the right side of arrangement on vehicle body, obligatory point and right side behind the right side on vehicle body After first behind measurement point and right side second measurement point in obligatory point is located at the right side on parallel same straight line and behind right side with X Behind side first behind measurement point and right side second between measurement point.
7. body stiffness according to claim 6 tests confidence level method for improving, which is characterized in that behind the right side first The distance between measurement point and obligatory point behind right side after the distance between measurement point and obligatory point behind the right side and right side second It is identical.
8. body stiffness according to claim 6 or 7 tests confidence level method for improving, which is characterized in that the step S2 In, obtain the right side bodies stiffness test value S of vehicle bodyrProcess comprising steps of
S21, the measurement point behind measurement point and right side second behind preceding measurement point, right side first on the right side of arrangement on vehicle body;
S22, load is applied to vehicle body;
S23, the displacement D for obtaining measurement point before right siderf, behind right side first measurement point displacement Drr1With measurement point behind right side second Displacement Drr2
S24, to the displacement D of measurement point behind right side firstrr1With the displacement D of measurement point behind right side secondrr2Interpolation calculation is carried out, is obtained Displacement D after to right side at obligatory pointrr
S25, according to the displacement D of measurement point before right siderfTorsion angle before the right side of measurement point before on the right side of calculatingrf, behind right side The displacement D of obligatory pointrrThe right side retrotorsion angle θ of obligatory point after on the right side of calculatingrr
S26, according to torsion angle before right siderfWith right side retrotorsion angle θrr, right side bodies stiffness test value S is calculatedr
9. body stiffness according to claim 8 tests confidence level method for improving, which is characterized in that in the step S21, The distance between measurement point and obligatory point behind the right side are 100mm, measurement point behind the right side second behind the right side first It is 100mm with the distance between obligatory point behind the right side, measurement point is arranged in behind measurement point and right side second behind right side first Middle position in the Y-direction of the bottom surface of right side floor side member.
10. body stiffness according to claim 8 or claim 9 tests confidence level method for improving, which is characterized in that the step It in S22, is constrained at obligatory point by fixture behind the right side on vehicle body, at the right side front damper seat installation point on vehicle body Apply load.
CN201811001927.1A 2018-08-30 2018-08-30 Body stiffness tests confidence level method for improving Pending CN108982123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811001927.1A CN108982123A (en) 2018-08-30 2018-08-30 Body stiffness tests confidence level method for improving

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811001927.1A CN108982123A (en) 2018-08-30 2018-08-30 Body stiffness tests confidence level method for improving

Publications (1)

Publication Number Publication Date
CN108982123A true CN108982123A (en) 2018-12-11

Family

ID=64548391

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811001927.1A Pending CN108982123A (en) 2018-08-30 2018-08-30 Body stiffness tests confidence level method for improving

Country Status (1)

Country Link
CN (1) CN108982123A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102435508A (en) * 2011-09-14 2012-05-02 江苏科技大学 White car body static stiffness restriction device and static stiffness detection method
CN102455251A (en) * 2010-10-22 2012-05-16 上海汽车集团股份有限公司 Automotive body in white torsion rigidity test system and method thereof
CN104573174A (en) * 2014-11-20 2015-04-29 华晨汽车集团控股有限公司 CAE (computer aided engineering)-based car body rigidity analysis method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102455251A (en) * 2010-10-22 2012-05-16 上海汽车集团股份有限公司 Automotive body in white torsion rigidity test system and method thereof
CN102435508A (en) * 2011-09-14 2012-05-02 江苏科技大学 White car body static stiffness restriction device and static stiffness detection method
CN104573174A (en) * 2014-11-20 2015-04-29 华晨汽车集团控股有限公司 CAE (computer aided engineering)-based car body rigidity analysis method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
蒋兵: ""某 SUV 白车身静态扭转刚度分析"", 《汽车零部件》 *

Similar Documents

Publication Publication Date Title
US8966998B2 (en) Support unit
Tuononen Optical position detection to measure tyre carcass deflections
CN101861510B (en) Method of aligning arm reference systems of multiple- arm measuring machine
US20130111981A1 (en) Multi-axle joint shifting loading apparatus for processing center and detection method for static stiffness distribution
CN101866378B (en) Method for solving rigidity of plate spring by using automatic dynamic analysis of mechanical system (ADAMS)
Linares et al. Impact of measurement procedure when error mapping and compensating a small CNC machine using a multilateration laser interferometer
US4939848A (en) Vehicle frame alignment gauge
Carlson et al. Consistent nonlinear estimation of longitudinal tire stiffness and effective radius
CN201772837U (en) Multifunctional detection plug for car body stamping part check tool
EP2653851B1 (en) Method for calibrating multi-component force detector provided in rolling resistance testing machine
CN102877490B (en) Method for detecting quality of large-diameter tubular pile at low strain
CN106428623B (en) A kind of undercarriage becomes the load loading method of stroke test
CN103411504B (en) Location measurement device
CN201575769U (en) Detection tool for bent cross beams of heavy trucks
CN104949830B (en) A kind of automotive suspension leaf spring test-bed
US7192041B2 (en) Suspension stop instrumented under deformation in order to measure forces
CN202255381U (en) Level bar
CN102519692B (en) Rigid-body mode integration test method for automobile power assembly and suspension
CN201497612U (en) Mass center position measuring device for power assembly of vehicle
KR100294435B1 (en) Device for deciding displacement of vehicle on wheel, operation system therewith, and vehicle
EP1906165A1 (en) Method and device for calculating magnitude of cornering force generated in wheel
CN105808872B (en) A kind of vehicle suspension leaf spring frequency domain fatigue analysis method
US20190285461A1 (en) Vehicle weight measurement device
CN103511802B (en) Microphone support for in-vehicle acoustic mode measurement and testing
ES2666304T3 (en) Determination of the behavior of loaded wheels through load simulation

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination