CN105843999A - Finite element simulative analysis method for spline connection anti-rolling torsion bars - Google Patents
Finite element simulative analysis method for spline connection anti-rolling torsion bars Download PDFInfo
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Abstract
The invention discloses a method for carrying out strength analysis and fatigue life verification on spline connection anti-rolling torsion bars. The method comprises the following steps: 1) establishing a geometric model; 2) carrying out meshing, setting binding constraints between spline tooth pairs in finite element analysis software and submitting analytical calculation to obtain a preliminary calculation result; 3) carrying out cutting to obtain a sub-model with spline tooth pairs and tool withdrawal groove characteristics; 4) meshing the sub-model, carrying out node-merging on meshes between the spline tooth pairs of the sub-model, setting interference contact between the spline tooth pairs, importing the preliminary calculation result, applying surface force on the cutting surface of the sub-model to carry out driving, and submitting analytical calculation to obtain a final calculation result of the sub-model; 5) carrying out fatigue life verification on the final calculation result of the sub-model. According to the method disclosed in the invention, the analysis speed and analysis precision of finite element analysis can be ensured, the fatigue life verification cost can be reduced and much research and development cost can be saved.
Description
Technical field
The present invention relates to spline and couple anti-side rolling torsion rod intensity analysis and Verification Technology fatigue life, be specifically related to a kind of for spline
Couple the Finite Element Simulation Analysis method of anti-side rolling torsion rod.
Background technology
EMU, passenger vehicle etc. all have employed air spring and open and improve Vertical Vibration of Vehicle performance, makes the angle of car body rolling
Rigidity becomes flexible relative, but this also makes the angle of heel angular displacement of car body in operation increase, and brings serious potential safety hazard.For this
Bogie Frames of High Speed Passenger Car is all provided with anti-side rolling torsion rod while using air spring both at home and abroad.Anti-side rolling torsion rod by torsion bar shaft,
Reverse arm forms, and wherein torsion bar shaft is main stressed member.When car body sidewinders, two reverse arms of horizontal positioned are for torsion bar
There is the effect of a mutually opposing power and moment respectively, make twiot arm bear moment of torsion and produce elasticity of torsion deformation, with car body
Produce the in opposite direction, to retrain the rolling of car body of angle of roll angular displacement.Torsion bar shaft mainly has with the connecting mode of reverse arm
Interference fit joint couples with spline.Interference fit joint typically uses the method one-shot forming of the temperature difference, simple and reliable process, but the most quick detachable,
Affect operation maintenance maintenance efficiency；Spline couples and typically is made up of internal spline and external splines, be commonly applied to transmit bigger torque with
Centering precision requires high quiet connection and dynamic connection, uses spline to couple and then can dismantle replacement, and can preferably transmit moment.
At present in the anti-side rolling torsion rod design phase, finite element analysis technology all can be utilized to carry out intensity analysis and fatigue life checks.
But when at present anti-side rolling torsion rod being carried out finite element analysis, generally there are following shortcoming: (I) is due in torsion bar shaft and reverse arm
There is spline tooth and escape labyrinth feature, general employing C3D4 grid cell divides, in order to obtain accurately
Result, grid is finely divided, makes the number of grid of structure increase, cause that number of grid is big, computational efficiency is low, analysis and solution
Time is long.(II) many to contact surface due to spline tooth, convergence is very poor, spline tooth between adopt the method for binding constraints, impact
Analysis precision, it is impossible to accurately calculate the stress value at spline tooth and escape, accuracy in computation is low.(III) existing spline connection
Check fatigue life connecing anti-side rolling torsion rod is usually carried out on testing stand, and the fatigue load of anti-side rolling torsion rod is designed as 10,000,000
Secondary, the loading frequency of testing stand is generally 2Hz, and therefore, the time that the fatigue life of a set of spline anti-side rolling torsion rod checks is 1388
Individual hour, need substantial amounts of time and expense.In sum, how to improve spline and couple the analysis efficiency of anti-side rolling torsion rod, ask
The accuracy solved, reduces the expense checked fatigue life, it has also become the technical problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
The technical problem to be solved in the present invention: for the problems referred to above of prior art, it is provided that one ensure that finite element analysis divides
Analysis speed and analysis precision, reduce and check expense fatigue life, and that saves substantial amounts of R&D costs couples anti-side rolling torsion for spline
The Finite Element Simulation Analysis method of bar.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:
A kind of spline couples anti-side rolling torsion rod intensity analysis and check method fatigue life, and step includes:
1) set up spline and couple the geometric model of anti-side rolling torsion rod；
2) described geometric model employing C3D4 grid cell is carried out stress and strain model；Geometric model after carrying out stress and strain model exists
In finite element analysis software by spline tooth between binding constraints is set and submits analytical calculation to, obtain described spline couple anti-side rolling
The primary Calculation result of torsion bar intensity；
3) described geometric model is cut, obtain remaining with spline tooth to and the submodel of relief groove structure feature；
4) described submodel employing C3D8R grid cell is carried out stress and strain model；Submodel after carrying out stress and strain model is being had
Grid between spline tooth pair is realized conode by finite element analysis software, Interference contact is set by between spline tooth pair, import described tentatively
Result of calculation, applies face power on the facet of described submodel and is driven and submits analytical calculation to, obtain described submodel
Final calculation result；
5) final calculation result for described submodel carries out check fatigue life.
Preferably, described step 2) detailed step include:
2.1) C3D4 grid cell is used to carry out stress and strain model for described geometric model；
2.2) geometric model after carrying out stress and strain model imports finite element analysis software；
2.3) in described finite element analysis software, C3D4 grid cell is used to carry out stress and strain model described geometric model, and
The size of mesh opening encryption at spline tooth and escape position, the grid at remaining position in described geometric model are carried out free size amplification；
2.4) to described geometric model imposed load and boundary condition in finite element analysis software, turning round for described geometric model
Apply vertical load on pivoted arm, retrain mounting seat, Interference contact is set by between spline tooth pair, quickly submits calculating to, obtain described
Spline couples the primary Calculation result of anti-side rolling torsion rod intensity.
Preferably, described step 3) in described geometric model cut specifically refer to carry out at the position concentrated away from stress
Cutting, obtain remaining with spline tooth to and the submodel of relief groove structure feature.
Preferably, described step 5) specifically use fe-safe software to carry out check fatigue life.
Preferably, described step 5) detailed step include: the final calculation result of described submodel is imported fe-safe software
And the stress value of final step in each analysis step of the final calculation result extracting described submodel；Fe-safe software is arranged
Fatigue load, load history, number of times fatigue life, surface roughness, material parameter, tired algorithm also submit calculating to, obtain
Result of calculation file；Described result of calculation file is imported in finite element analysis software, checks life-span cloud atlas and stress intensity factor
Cloud atlas FOS, described stress intensity factor cloud atlas FOS characterize the intensity factor S of imposed load, when the value of intensity factor S is more than
Or during equal to 1, it is determined that the fatigue load arranged in fe-safe software under the conditions of current projected life is safe.
Spline of the present invention couples anti-side rolling torsion rod intensity analysis and check method fatigue life has an advantage that
1, the present invention is directed to torsion bar geometric model uses C3D4 grid cell to carry out stress and strain model in finite element analysis software, will
Spline tooth between binding constraints is set and submits analytical calculation to, obtain spline couple anti-side rolling torsion rod intensity primary Calculation result,
Number of grid can be controlled, improve analysis efficiency.
2, the present invention uses the method for submodel to carry out secondary calculating, the cutting of torsion bar geometric model is obtained submodel, retains spline
Tooth to and relief groove structure feature, use C3D8R stress and strain model, and realize grid conode, spline tooth between use interference
The mode of contact, improves accuracy of analysis, it is ensured that the analysis efficiency of its finite element analysis.
3, the present invention uses the method for finite element that anti-side rolling torsion rod carries out check fatigue life, reduces control experiment fatigue life and takes
With, save substantial amounts of R&D costs.
Accompanying drawing explanation
Fig. 1 is the basic flow sheet of embodiment of the present invention method.
Fig. 2 is embodiment of the present invention step 1) the geometric model schematic diagram set up.
Fig. 3 is embodiment of the present invention step 2) grid model of geometric model that obtains after gridding.
Fig. 4 is embodiment of the present invention step 3) cut the submodel schematic diagram obtained.
Fig. 5 is embodiment of the present invention step 4) the submodel grid model that obtains after gridding
Fig. 6 is that the embodiment of the present invention arranges interface schematic diagram in applying face, submodel border power.
Fig. 7 is the interface schematic diagram that the embodiment of the present invention extracts stress value in fe-safe.
Fig. 8 is the embodiment of the present invention interface schematic diagram at load defined in fe-safe and loading sequence.
Fig. 9 is that the embodiment of the present invention is at fe-safe software design patterns analysis of fatigue bound of parameter face schematic diagram.
Figure 10 is the S-N curve of the material quoted in the embodiment of the present invention.
Figure 11 is the stress intensity factor cloud atlas FOS that embodiment of the present invention analysis obtains.
Figure 12 is the life-span cloud atlas that embodiment of the present invention analysis obtains.
Figure 13 is the fracture that embodiment of the present invention kind spline couples anti-side rolling torsion rod.
Detailed description of the invention
Hereafter will couple as a example by anti-side rolling torsion rod by certain spline, spline of the present invention will be coupled anti-side rolling torsion rod intensity analysis and tired longevity
The detailed description of the invention of life check method is described in further detail.
As it is shown in figure 1, the step that the present embodiment spline couples anti-side rolling torsion rod intensity analysis and check method fatigue life includes:
1) set up spline and couple the geometric model of anti-side rolling torsion rod.
In the present embodiment, step 1) specifically use PTC Creo software to set up the geometric model of spline connection anti-side rolling torsion rod.
As in figure 2 it is shown, the geometric model setting up spline connection anti-side rolling torsion rod in the present embodiment includes torsion bar shaft 1, mounting seat 2
With reverse arm 3, two sections of torsion bar shaft 1 are respectively and fixedly provided with a mounting seat 2, and are arranged with a reverse arm 3 in mounting seat 2, peace
Dress seat 2 and reverse arm 3 between be provided with spline tooth to and use spline to couple.
2) geometric model use C3D4 grid cell carry out stress and strain model；The geometric model after stress and strain model will be carried out limited
In meta-analysis software by spline tooth between binding constraints is set and submits analytical calculation to, obtain spline couple anti-side rolling torsion rod intensity
Primary Calculation result；
In the present embodiment, step 2) detailed step include:
2.1) C3D4 grid cell is used to carry out stress and strain model for geometric model；
2.2) geometric model after carrying out stress and strain model imports finite element analysis software；In the present embodiment, finite element analysis software
Concrete employing Abaqus software；
2.3) in finite element analysis software, C3D4 grid cell is used to carry out stress and strain model geometric model, and by geometry mould
In type, the size of mesh opening encryption at spline tooth and escape position, the grid at remaining position carry out free size amplification, and obtain is limited
Meta-model is as shown in Figure 3；By by the size of mesh opening encryption at spline tooth in geometric model and escape position, the net at remaining position
Lattice carry out free size amplification, it is possible to effectively control number of grid, improve analysis efficiency；
2.4) to geometric model imposed load and boundary condition in finite element analysis software, execute on reverse arm for geometric model
Add vertical load, retrain mounting seat, Interference contact is set by between spline tooth pair, quickly submits calculating to, obtain spline and couple anti-side
The primary Calculation result (Global_odb destination file) of rolling torsion bar intensity.
3) geometric model is cut, obtain remaining with spline tooth to 4 and the submodel of escape 5 architectural feature.
Based on St.Venant law, the present embodiment step 3) in geometric model cut specifically refer to concentrating away from stress
Position is cut, and obtains remaining with spline tooth to 4 and the submodel of escape 5 architectural feature, as shown in Figure 4, and escape
5 gradually detach the skewed slot of formation for mounting seat 2 is added cutter in man-hour from mounting seat 2.
4) submodel use C3D8R grid cell carry out stress and strain model；To carrying out the submodel after stress and strain model in finite element
Analyze in software (i.e. Abaqus software) and grid between spline tooth pair is realized conode (as shown in Figure 5), by between spline tooth pair
Interference contact is set, imports primary Calculation result (Global_odb destination file), the facet of submodel applies face power and enters
(Surface tractions as shown in Figure 6) and submit analytical calculation to, obtains the final calculation result of submodel to row cutting
(Sub_model.odb destination file).The present embodiment uses the method for submodel to carry out secondary calculating, cuts structure,
Retain spline tooth to 4 and the architectural feature of escape 5, use C3D8R grid cell to divide, and realize grid conode, flower
Key tooth between use the mode of Interference contact, it is possible to be effectively improved the accuracy of analysis.
5) final calculation result (Sub_model.odb destination file) for submodel carries out check fatigue life.This enforcement
In example, step 5) specifically use fe-safe software to carry out check fatigue life, the present embodiment uses fe-safe software to carry out fatigue
Life-span checking substitutes and is carrying out fatigue experiment on testing stand, saves substantial amounts of time and expense.
In the present embodiment, step 5) detailed step include:
5.1) final calculation result of submodel is imported fe-safe software and extracts each analysis of final calculation result of submodel
The stress value of final step in step, as it is shown in fig. 7, as a example by analysis step step1, the final step of analysis step step1 is
Increment6, then extract the stress value of Increment6 for analysis step step1；
5.2) arrange in fe-safe software fatigue load, load history, number of times fatigue life, surface roughness, material parameter,
Tired algorithm also submits calculating to, obtains result of calculation file, and Fig. 8 (a) and (b) are that the embodiment of the present invention is fixed in fe-safe
Justice load and the interface schematic diagram of loading sequence, see Fig. 8 (a), and during wherein load selects Dataset 1, stress value is: forward
Stress (Direct Range) is 738to-673MPa, and shear stress (Shear Range) is 94to-89MPa, sees figure
8 (b), load loading sequence (Stress Dataset 1) is sinusoidal load (1 ,-1), and fatigue life, (Repeats) was set as
10000000 times；Fig. 9 be the embodiment of the present invention at fe-safe software design patterns analysis of fatigue bound of parameter face schematic diagram, wherein surface is thick
Rough (Surface Finish) is (1.6～4 μm), and high spring steel 52CrMoV4 selected by the material (Material) of torsion bar, tired
Labor algorithm (Algorithm) uses BrownMiller criterion (Morrow mean stress correction).In the present embodiment, spline joins
Connecing anti-side rolling torsion rod material selection 52CrMoV4 steel, as shown in Figure 10, wherein abscissa is the S-N curve quoted in analysis
Cycle-index, vertical coordinate is stress value；
5.3) result of calculation file is imported in finite element analysis software, checks life-span cloud atlas and stress intensity factor cloud atlas FOS,
Stress intensity factor cloud atlas FOS characterizes the intensity factor S of imposed load, when the value of intensity factor S is more than or equal to 1, sentences
It is safe for being scheduled on the fatigue load arranged in fe-safe software under the conditions of current projected life.Shown in Figure 11 enforcement
The stress intensity factor cloud atlas FOS that example analysis obtains, wherein at torsion bar spline, minimum stress-intensity factor is 0.909, sees figure
The life-span cloud atlas that 12 illustrated embodiment analyses obtain, the fatigue life that at torsion bar spline, minimum stress-intensity factor is corresponding is 3,440,000
Secondary fatigue loading, less than initial designs life-span 10,000,000 times, more coincide with actual tests and (completes 4,100,000 times in actual tests
After fatigue loading, torsion bar shaft 15 ruptures, as shown in figure 13) at escape.
Couple the intensity analysis of anti-side rolling torsion rod it should be noted that the present embodiment only lists a kind of spline and check fatigue life
Examples of implementation, but the present embodiment method be obviously also applied for any other structure spline couple anti-side rolling torsion rod intensity divide
Analysis and fatigue life check, therefore do not repeat them here.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-described embodiment, all
The technical scheme belonged under thinking of the present invention belongs to protection scope of the present invention.It should be pointed out that, for the art is common
For technical staff, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as this
The protection domain of invention.
Claims (5)
1. a spline couples anti-side rolling torsion rod intensity analysis and check method fatigue life, it is characterised in that step includes:
1) set up spline and couple the geometric model of anti-side rolling torsion rod；
2) described geometric model employing C3D4 grid cell is carried out stress and strain model；Geometric model after carrying out stress and strain model exists
In finite element analysis software by spline tooth between binding constraints is set and submits analytical calculation to, obtain described spline couple anti-side rolling
The primary Calculation result of torsion bar intensity；
3) described geometric model is cut, obtain remaining with spline tooth to and the submodel of relief groove structure feature；
4) described submodel employing C3D8R grid cell is carried out stress and strain model；Submodel after carrying out stress and strain model is being had
Grid between spline tooth pair is realized conode by finite element analysis software, Interference contact is set by between spline tooth pair, import described tentatively
Result of calculation, applies face power on the facet of described submodel and is driven and submits analytical calculation to, obtain described submodel
Final calculation result；
5) final calculation result for described submodel carries out check fatigue life.
Spline the most according to claim 1 couples anti-side rolling torsion rod intensity analysis and check method fatigue life, and its feature exists
In, described step 2) detailed step include:
2.1) C3D4 grid cell is used to carry out stress and strain model for described geometric model；
2.2) geometric model after carrying out stress and strain model imports finite element analysis software；
2.3) in described finite element analysis software, C3D4 grid cell is used to carry out stress and strain model described geometric model, and
The size of mesh opening encryption at spline tooth and escape position, the grid at remaining position in described geometric model are carried out free size amplification；
2.4) to described geometric model imposed load and boundary condition in finite element analysis software, turning round for described geometric model
Apply vertical load on pivoted arm, retrain mounting seat, Interference contact is set by between spline tooth pair, quickly submits calculating to, obtain described
Spline couples the primary Calculation result of anti-side rolling torsion rod intensity.
Spline the most according to claim 2 couples anti-side rolling torsion rod intensity analysis and check method fatigue life, and its feature exists
In, described step 3) in described geometric model cut the position specifically referred to concentrating away from stress cut,
To remain with spline tooth to and the submodel of relief groove structure feature.
4. couple anti-side rolling torsion rod intensity analysis and check method fatigue life according to the spline described in claim 1 or 2 or 3,
It is characterized in that, described step 5) specifically use fe-safe software to carry out check fatigue life.
Spline the most according to claim 4 couples anti-side rolling torsion rod intensity analysis and check method fatigue life, and its feature exists
In, described step 5) detailed step include: the final calculation result of described submodel is imported fe-safe software and extracts institute
The stress value of final step in each analysis step of the final calculation result stating submodel；Fe-safe software is arranged fatigue load,
Load history, number of times fatigue life, surface roughness, material parameter, tired algorithm also submit calculating to, obtain result of calculation literary composition
Part；Described result of calculation file is imported in finite element analysis software, checks life-span cloud atlas and stress intensity factor cloud atlas FOS,
Described stress intensity factor cloud atlas FOS characterizes the intensity factor S of imposed load, when the value of intensity factor S is more than or equal to 1,
Judge that the fatigue load arranged in fe-safe software under the conditions of current projected life is safe.
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| CN201610157334.9A CN105843999B (en) | 2016-03-18 | 2016-03-18 | A kind of connection anti-side rolling torsion rod intensive analysis of spline and fatigue life check method |
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| CN201610157334.9A CN105843999B (en) | 2016-03-18 | 2016-03-18 | A kind of connection anti-side rolling torsion rod intensive analysis of spline and fatigue life check method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109885901A (en) * | 2019-01-29 | 2019-06-14 | 格特拉克（江西）传动系统有限公司 | A kind of speed changer welded gear intensity and fatigue life calculation method |
| CN112744249A (en) * | 2021-01-21 | 2021-05-04 | 中车青岛四方机车车辆股份有限公司 | Anti-side-rolling torsion bar and forming process thereof |
| CN113742954A (en) * | 2020-05-29 | 2021-12-03 | 株洲中车时代电气股份有限公司 | Interference contact structure, and finite element modeling and calibrating method and system of motor stator |
| CN114638057A (en) * | 2021-12-20 | 2022-06-17 | 重庆大学 | Spline wear and fatigue life simulation method based on ABAQUS secondary development |
| CN115859747A (en) * | 2023-02-13 | 2023-03-28 | 中海油田服务股份有限公司 | Calculation method, device and equipment for interference coupling transmission load and storage medium |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109885901A (en) * | 2019-01-29 | 2019-06-14 | 格特拉克（江西）传动系统有限公司 | A kind of speed changer welded gear intensity and fatigue life calculation method |
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| CN112744249A (en) * | 2021-01-21 | 2021-05-04 | 中车青岛四方机车车辆股份有限公司 | Anti-side-rolling torsion bar and forming process thereof |
| CN112744249B (en) * | 2021-01-21 | 2022-06-10 | 中车青岛四方机车车辆股份有限公司 | Anti-side-rolling torsion bar and forming process thereof |
| CN114638057A (en) * | 2021-12-20 | 2022-06-17 | 重庆大学 | Spline wear and fatigue life simulation method based on ABAQUS secondary development |
| CN114638057B (en) * | 2021-12-20 | 2024-02-06 | 重庆大学 | Spline abrasion and fatigue life simulation method based on ABAQUS secondary development |
| CN115859747A (en) * | 2023-02-13 | 2023-03-28 | 中海油田服务股份有限公司 | Calculation method, device and equipment for interference coupling transmission load and storage medium |
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