Design method of automobile energy-absorbing box and automobile design method
A design method and energy-absorbing box technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as difficult to eliminate design defects of energy-absorbing boxes, cumbersome and complicated design methods, etc., to avoid design defects that are difficult to eliminate and easy to simulate The effect of optimization improvement and design cost reduction
Active Publication Date: 2016-08-03
GUANGZHOU AUTOMOBILE GROUP CO LTD
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Problems solved by technology
[0005] In order to solve the technical problem that the design method of the automobile energy-absorbing box in the prior art is relatively cumbersome and complicated, and the design defects of the energy-absorbing box are difficult to eliminate
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[0035] Each step will be explained below in conjunction with an embodiment.
[0036] 1. Preset the length L of the target crash box 1 and crush rate, calculate the crush distance of the energy-absorbing box.
[0037] At the beginning of the design, the length of the energy-absorbing box L 1 It can be given by the designer (such as chassis general layout engineer and body structure engineer) in advance based on experience or referring to the length of the energy-absorbing box of the benchmark car, for example, based on the length of the modeling surface, roughly estimate the The total length of the rear end of the beam, and then select the length L of the energy-absorbing box of the target car based on experience or reference to the benchmark car within the remaining length 1 .
[0038] Let the crush rate be represented by the symbol a.
[0039] The crush rate is also determined according to the designer's experience or by referring to the crush rate of the energy-absorbing...
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In order to solve the technical problem that the design method of the automobile crash box in the prior art is relatively cumbersome and complicated, and the design defects of the crash box are difficult to eliminate. The invention provides a method for designing an automobile energy-absorbing box, comprising the steps of: preset the length and crushing rate of the target energy-absorbing box, calculate and obtain the crushing distance of the energy-absorbing box; obtain the theoretical energy absorbed by the energy-absorbing box in collision; The theoretical average crushing force of the energy-absorbing box is obtained by dividing the theoretical energy absorbed by the collision of the energy-absorbing box by its crushing distance; according to the average crushing force formula, the actual average crushing force of the energy-absorbing box with various alternative specifications is calculated; According to the principle that the actual average crushing force of the energy-absorbing box is greater than or equal to the theoretical average crushing force of the energy-absorbing box, the target energy-absorbing box is designed by selecting appropriate specifications from the alternative specifications. Compared with the existing experience-based design, the design method of the present invention is more scientific, and the designed energy-absorbing box has fewer defects, and is easier for subsequent simulation optimization and improvement, simplifies the design method, shortens the design time, and reduces the design cost.
Description
technical field [0001] The invention relates to the field of design of an automobile energy-absorbing box, in particular to a design method of an automobile low-speed collision energy-absorbing box. Background technique [0002] The damage to the car itself caused by the low-speed collision of the car is one of the important reasons for car insurance claims. The current Automobile Insurance Maintenance Research Association (RCAR) has set the working condition of "15km / h collision speed, 10° collision angle and 40% offset (offset) rigid barrier collision" (hereinafter referred to as: RCAR15 working condition) to To define the low-speed collision performance of a car, please refer to the RCAR specification "The Procedure for Conducting a Low Speed 15km / hOffset Insurance Crash Test to Determine the Damageability and Repairability Features of Motor Vehicles" for details. Under this working condition, if the body structure (generally the longitudinal beam) after the front cras...
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IPC IPC(8): G06F17/50B60R19/18
Inventor 黄向东刘念斯张进李罡徐仰汇杨蔓王玉超岳鹏饶建鹏唐烨肖晶古惠南
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD