CN103175691B - Based on the automobile B-column detection method of security performance - Google Patents
Based on the automobile B-column detection method of security performance Download PDFInfo
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- CN103175691B CN103175691B CN201310060965.5A CN201310060965A CN103175691B CN 103175691 B CN103175691 B CN 103175691B CN 201310060965 A CN201310060965 A CN 201310060965A CN 103175691 B CN103175691 B CN 103175691B
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Abstract
The invention provides a kind of automobile B-column detection method based on security performance, it comprises the following steps: 1) maintained static by automobile B-column; 2) adopt the centre position of knocking hammering blow automobile B-column, knock hammer and be provided with two acceleration transducers, obtained the acceleration change curve knocking hammer in impact process by acceleration transducer; 3) according to step 2) middle acceleration change curve acquisition average acceleration; 4) calculate the deflection obtaining automobile B-column according to average acceleration, judge whether deflection is less than 210mm; 5) calculate the crossbeam bearing capacity obtaining automobile B-column according to average acceleration, judge whether crossbeam bearing capacity is greater than 80KN; 6) observe automobile B-column and whether have fracture after the blow, whether solder joint lost efficacy, if do not have fracture, solder joint effectively, deflection is less than 210mm, and crossbeam bearing capacity is greater than 80KN, then automobile B-column is qualified.The present invention detects quality and the performance of automobile B-column easily, for automobile B-column part sourcing business provides the incoming test means of science.
Description
Technical field
The present invention relates to a kind of auto parts and components method for testing performance, particularly relate to a kind of automobile B-column detection method based on security performance.
Background technology
The effect of body of a motor car is mainly protected driver and is formed good aeromechanics environment.Good vehicle body can not only bring better performance, also can embody the individual character of car owner.Automotive body structure in the form, is mainly divided into Non-carrying type and bearing-type two kinds.The fastness of body of a motor car, anti-collision are the problems that car owner is comparatively concerned about, are also performance index of car mass.At present, at automobile manufacturing field, the detection method of security performance is mainly in car load and body in white, and the effect wherein of single parts and impact thereof are difficult to consider, and Parts Purchasing or remodeling etc. lack corresponding checking system.When buying parts, being difficult to how judge this parts quality, therefore, needing a kind of method to the single detection of each parts quality.
Be provided with A post, B post, C post in body of a motor car, and A, B, C post is three vertical beams on automobile, A post between nacelle and driving cabin, the top of left and right rearview mirror; B post, between the front stall and back seat of driving cabin, extends to bottom car from roof; The both sides that C post is rested the head in recoil.A, B, C post is not only the metal column propping up driving cabin roof; and have important protective effect to the member in driving cabin; in vehicle generation rolling or when toppling; A, B, C post can effectively avoid driving cabin to be extruded distortion; so; the intensity of A, B, C post is concerning significant the life in car, and A, B, C post of some luxury cars and vehicle body comprise vehicle frame integration, and security improves greatly.Another aspect, A, B, C post is also some devices " the only way which must be passed " such as part electric appliance circuits, securing band (B post), illumination acoustics, above even air bag can be placed in.Therefore, the quality of automobile B-column self directly affects the quality of whole vehicle body, and how to detect the quality of automobile B-column, and which type of automobile B-column meets the requirements, and is the problem lacking research at present.Therefore, need a kind of to automobile B-column performance and the whether qualified detection method of automobile B-column.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of automobile B-column detection method based on security performance, for solving the problem cannot carrying out Performance Detection in prior art for automobile B-column.
For achieving the above object and other relevant objects, the invention provides a kind of automobile B-column detection method based on security performance, it comprises the following steps: 1), first maintained static by automobile B-column;
2), adopt and knock hammer to impact described automobile B-column centre position with the impact gross energy of 3.9KJ, described in knock hammer and be provided with two acceleration transducers, obtained the acceleration change curve knocking hammer described in impact process by described acceleration transducer;
3), according to step 2) described in acceleration change curve obtain average acceleration a;
4), calculate the deflection obtaining described automobile B-column according to described average acceleration a, judge whether described deflection is less than 210mm;
5), calculate the crossbeam bearing capacity obtaining described automobile B-column according to described average acceleration a, judge whether described crossbeam bearing capacity is greater than 80KN;
6), observe described automobile B-column and whether have fracture after the blow, whether solder joint lost efficacy, if not fracture, solder joint are effective, and described deflection is less than 210mm, and described crossbeam bearing capacity is greater than 80KN, then described automobile B-column is qualified; Otherwise described automobile B-column is substandard product.
Preferably, the concrete grammar fixing described automobile B-column in described step 1) is: all fixed by fixed mount at the both ends of described automobile B-column, the stationary plane that described fixed mount and described automobile B-column two ends fix all perpendicular to ground, and accepts the shock surface of impact perpendicular to described automobile B-column; And the two ends of described automobile B-column are parallel to ground.
Preferably, the length knocking hammer described in is respectively 200mm, 150mm, 215mm.
Whether preferably, before carrying out step 1), first carry out preliminary examination to described automobile B-column, observing described automobile B-column has breach, if there is breach, described automobile B-column is substandard product; If there is no breach, detect according to described automobile B-column detection method.
Preferably, automobile B-column deflection is obtained by twice integral and calculating according to the average acceleration obtained.
Preferably, the crossbeam bearing capacity of described automobile B-column be multiplied by by described average acceleration described in knock hammer quality obtain.
As mentioned above, automobile B-column detection method based on security performance of the present invention, there is following beneficial effect: by this detection method, conveniently can detect quality and the performance of automobile B-column, for automobile B-column purchaser provides the incoming test means of science, make purchaser can from main separation product and monitoring product quality; The detection of automobile B-column, can the quality problems that exist of Timeliness coverage part self, solve in time, avoid body in white, the complete vehicle test stage just finds quality problems and cause economic loss; Detect in units of part, be convenient to carry out new design and improvement, improve security performance and the light weight degree of part.
Accompanying drawing explanation
Fig. 1 is shown as the fixing schematic diagram of automobile B-column of the present invention.
Fig. 2 is shown as the schematic diagram that hammering blow automobile B-column is knocked in employing of the present invention.
The side view of hammer is knocked described in Fig. 3 is shown as.
The vertical view of hammer is knocked described in Fig. 4 is shown as.
Element numbers explanation
1 automobile B-column
11 small ends
12 hold greatly
13 pars intermedias
2 fixed mounts
3 fixed mounts
4 knock hammer
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this instructions can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this instructions also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
Refer to Fig. 1 and Fig. 2.It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
The invention provides a kind of automobile B-column detection method based on security performance, it comprises the following steps:
1), first automobile B-column 1 is maintained static; Fixing as shown in Figure 1 automobile B-column 1, automobile B-column comprises large end 12, small end 11 and connects the pars intermedia 13 of large end, small end, the width of large end 12 is greater than the width of small end 11, large for automobile B-column end 12 is fixed by fixed mount 3, small end is fixed by fixed mount 2, and the stationary plane that fixed mount 2,3 and both ends fix is all perpendicular to ground; And the large end 12 of automobile B-column, small end 11 are all parallel to ground, this fixing means can the stressing conditions of mould automobile B-column in car load, and effectively ensure that automobile B-column fixed area in testing process did not lose efficacy;
2), as shown in Figure 2, adopt and knock hammer impacts above-mentioned automobile B-column centre position with the impact gross energy of 3.9KJ, this position corresponds to the thorax abdomen position of occupant in car load side collision, in side impact accident, determine injures and deaths whether key position, as shown in Figure 2, knock the position that hammer 4 knocks equal to the distance at automobile B-column two ends, namely L1 and L2 is equal, guarantee to knock the centre position that hammer knocks automobile B-column, and guarantee automobile B-column accept impact shock surface and above-mentioned stationary plane perpendicular, be provided with two acceleration transducers knocking on hammer 4, the acceleration change curve knocking hammer 4 in impact process is obtained by acceleration transducer,
3), according to step 2) middle acceleration change curve acquisition average acceleration a;
4), calculate the deflection obtaining automobile B-column 1 according to average acceleration a, judge whether this deflection is less than 210mm;
5), calculate the crossbeam bearing capacity obtaining automobile B-column 1 according to average acceleration a, judge whether this crossbeam bearing capacity is greater than 80KN;
6), observe automobile B-column 1 and whether have fracture after the blow, whether solder joint lost efficacy, if not fracture, solder joint are effective, and above-mentioned deflection is less than 210mm, and above-mentioned crossbeam bearing capacity is greater than 80KN, then automobile B-column is qualified; Otherwise automobile B-column is substandard product.
As shown in Figures 3 and 4, the above-mentioned hammer that knocks is for rectangle, long l, wide w, high h are respectively 200mm, 150mm, 215mm, adopt knocking hammer and can better checking automobile B-column whether qualified of this size, obtain automobile B-column deflection and crossbeam bearing capacity more accurately.Preferably, above-mentioned impact velocity of knocking hammer is 45km/h, and quality is 50Kg, and impact the centre position of automobile B-column by this impact velocity, such detection architecture is more accurate.If when impact velocity cannot reach 45km/h, can increase quality knocking hammer rear portion, suitably underspeeding, but must ensure that impacting gross energy is 3.9KJ, this gross energy passes through
Calculate and obtain.
By above detection method, be the basic demand of automobile B-column without fracture, to ensure that automobile B-column entirety is intact in collision deformation process, plays due effect.Limit the maximum deformation quantity of automobile B-column, to make in side impact events, for occupant leaves enough spaces, to avoid it be subject to undue extruding and oppress.Whether solder joint lost efficacy, and was to claim to the manufacturing of automobile B-column, guaranteed that it connects effectively reliable.Above-mentioned crossbeam bearing capacity is larger, according to W=FS, collision accident gross energy and total work W certain, when automobile B-column deflection S is certain, F is larger for crossbeam bearing capacity, and namely the energy of automobile B-column own absorption is more, the energy needing miscellaneous part and occupant to absorb is fewer, and the security of occupant improves.More than detect criterion from the assembling of automobile B-column, use performance to various aspects complete detection automobile B-columns such as the safeguard protections of occupant, guarantee the security performance of automobile B-column parts.
The concrete process of the test of automobile B-column detection method: carrying out above-mentioned steps 1) first preliminary examination is carried out to automobile B-column before, whether have breach, if there is breach, automobile B-column is substandard product if observing automobile B-column; If there is no breach, detect according to above-mentioned automobile B-column detection method.During inspection, above-mentioned quality of knocking hammer elects 50Kg as, and impact velocity is 45KM/h.Automobile B-column deflection is obtained by twice integral and calculating according to the average acceleration obtained; Be multiplied by by average acceleration and knock the crossbeam bearing capacity that hammer quality obtains automobile B-column; Gross energy calculates acquisition by crossbeam bearing capacity, automobile B-column deflection by twice integrating time.This test has certain requirement to testing laboratory's ground, and must ensure ground in process of the test under impact energy effect (in process of the test, gross energy is 3906J, obtains by calculating), not damaged and test can repeat.In process of the test, participant needs distance collision part certain distance (at least 2m), guarantees experimental safe.
In sum, automobile B-column detection method based on security performance of the present invention, conveniently can detect quality and the performance of automobile B-column, for automobile B-column purchaser provides the incoming test means of science, make purchaser can from main separation product and monitoring product quality; The detection of automobile B-column, can the quality problems that exist of Timeliness coverage part self, solve in time, avoid body in white, the complete vehicle test stage just finds quality problems and cause economic loss; Detect in units of part, be convenient to carry out new design and improvement, improve security performance and the light weight degree of part.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (5)
1. based on an automobile B-column detection method for security performance, it is characterized in that, described automobile B-column detection method comprises the following steps: 1), first maintained static by automobile B-column;
2), adopt and knock hammer to impact described automobile B-column centre position with the impact gross energy of 3.9KJ, it is equal to the distance at automobile B-column two ends to knock the position that hammer knocks; The described hammer that knocks is provided with two acceleration transducers, is obtained the acceleration change curve knocking hammer described in impact process by described acceleration transducer;
3), according to step 2) described in acceleration change curve obtain average acceleration a;
4), calculate the deflection obtaining described automobile B-column according to described average acceleration a, judge whether described deflection is less than 210mm;
5), calculate the crossbeam bearing capacity obtaining described automobile B-column according to described average acceleration a, the crossbeam bearing capacity of automobile B-column is multiplied by by average acceleration and knocks the acquisition of hammer quality, judges whether described crossbeam bearing capacity is greater than 80KN;
6), observe described automobile B-column and whether have fracture after the blow, whether solder joint lost efficacy, if not fracture, solder joint are effective, and described deflection is less than 210mm, and described crossbeam bearing capacity is greater than 80KN, then described automobile B-column is qualified; Otherwise described automobile B-column is substandard product.
2. the automobile B-column detection method based on security performance according to claim 1, it is characterized in that: described step 1) in fix described automobile B-column concrete grammar be: the both ends of described automobile B-column are all fixed by fixed mount, the stationary plane that described fixed mount and described automobile B-column fix all perpendicular to ground, and accepts the shock surface of impact perpendicular to described automobile B-column; And the two ends of described automobile B-column are parallel to ground.
3. the automobile B-column detection method based on security performance according to claim 1, is characterized in that: described in knock hammer length be respectively 200mm, 150mm, 215mm.
4. the automobile B-column detection method based on security performance according to claim 1, it is characterized in that: carry out step 1) first preliminary examination is carried out to described automobile B-column before, observe described automobile B-column and whether have breach, if there is breach, described automobile B-column is substandard product; If there is no breach, detect according to described automobile B-column detection method.
5. the automobile B-column detection method based on security performance according to claim 1, is characterized in that: automobile B-column deflection is obtained by twice integral and calculating according to the average acceleration obtained.
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| CN201310060965.5A CN103175691B (en) | 2013-02-27 | 2013-02-27 | Based on the automobile B-column detection method of security performance |
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| CN103175691B true CN103175691B (en) | 2016-03-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104502089B (en) * | 2015-01-06 | 2017-02-22 | 湖南大学 | Test method and device for detecting flexural rigidity and energy absorbing properties of automotive parts |
| CN104764615B (en) * | 2015-04-21 | 2017-08-04 | 奇瑞汽车股份有限公司 | A kind of vehicle side collision experimental rig and method |
| CN106997403B (en) * | 2016-01-26 | 2020-08-21 | 北京汽车股份有限公司 | Method and device for analyzing vehicle safety performance through vehicle offset collision test |
| CN108982126B (en) * | 2018-09-26 | 2020-06-30 | 武汉钢铁有限公司 | Method for measuring intrusion amount of B-pillar collision test |
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| CN202630850U (en) * | 2012-06-06 | 2012-12-26 | 嘉兴敏德汽车零部件有限公司 | Checking fixture for B-pillar panel of front automobile door |
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| DE10109375A1 (en) * | 2001-02-27 | 2002-09-12 | Opel Adam Ag | Pendulum device for simulating impact of motor vehicle has dummy head mounted on pendulum with accelerometer |
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| CN201965010U (en) * | 2010-12-16 | 2011-09-07 | 中国船舶重工集团公司第七一一研究所 | Device for measuring impact stiffness |
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