Vehicle restraint system substructure simulation method
A simulation method and system subsystem technology are applied in the field of automobile collision restraint system simulation, which can solve problems such as reducing the calculation accuracy of the model, and achieve the effects of simplifying the analysis model of the side collision restraint system, improving the efficiency and reducing the calculation time.
Pending Publication Date: 2019-11-01
CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
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This method is a coupling method of LS-DYNA and MADYMO, which simplifies the lateral constraint system model and saves calculation time. However, compared with the finite element calculation method, the multi-rigid body calculation method reduces the calculation accuracy of the model
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[0027] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0028] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0029] The present invention proposes a substructure simulation method of a vehicle restraint system, and the specific scheme is as follows:
[0030] The first step is to establish the attached figure 2 A simplified model of the lateral restraint system substructure is shown. The model is based on figure 1 The complete vehicle side conditions shown are simplified, and only the key structures that affect the driver’s injury are extracted from the vehicle finite element model, such as the right door, interior, B-pillar, front seat, and The dummy finite element model is introduced to form a complete simplified finite element model. as attached figure 2 As shown, the simplified model ...
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The invention provides a vehicle restraint system substructure simulation method, which specifically comprises the following steps of: extracting a vehicle body key structural member from a whole vehicle, and establishing a side restraint system substructure model; extracting the actual deformation of the right side structure of the vehicle door collided by the moving trolley along with time underthe side collision condition of the whole vehicle; endowing the data obtained in the step S2 to a side impact simplified constraint system model to serve as a boundary condition to simulate actual deformation generated by the right side structure of the vehicle door under the whole vehicle side impact working condition; and inputting the vehicle body node deformation displacement file as a boundary condition into the side constraint system substructure model established in the step S1, and reproducing the deformation state of the vehicle body key structure in the whole vehicle state. Comparedwith a complete finished automobile side impact finite element model calculation working condition, the side impact simplified model has the structural deformation consistent with that of the finished automobile side impact working condition, and the influence of the finished automobile side impact working condition on dummy damage can be completely reproduced. A traditional model is simplified,and the calculation time is shortened.
Description
technical field [0001] The invention belongs to the simulation field of automobile collision restraint system, in particular to a substructure simulation method of vehicle restraint system. Background technique [0002] Compared with the frontal collision condition, due to the less cushioning structure on the side of the vehicle and the relatively small space distance between the occupants, the probability and severity of occupant injuries are relatively high when the vehicle is impacted by a side collision. However, with the development of automobile safety technology, the research technology of vehicle side safety performance has been greatly improved. The current simulation of vehicle side collision conditions is mainly realized by computer simulation software, which is used to obtain structural deformation data and occupant injury values when the vehicle is subjected to side collision, and analyze and optimize the structure and restraint system based on the above data ...
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IPC IPC(8): G06F17/50
Inventor 郑艳婷李英杰郭庆祥马健胜卜晓兵李梦琦
Owner CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD