A simulation calculation method for torsional stiffness of body-in-white
A technology of torsional stiffness and simulation calculation, applied in geometric CAD, special data processing applications, etc., can solve problems such as inability to achieve, and achieve the effects of convenient acquisition, low acquisition, and simple construction
Active Publication Date: 2022-05-03
DONGFENG MOTOR GRP
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Problems solved by technology
The existing or traditional torsional stiffness simulation method is to directly apply the load on the center point of the shock absorber hole without the aid of the loading device. This method cannot avoid the change of the loading direction and magnitude of the torque when the vehicle body is deformed to a certain extent.
More importantly, in the actual test process, it is impossible to achieve a concentrated force that ensures that the left and right sides are completely anti-symmetrical.
Method used
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[0029] Embodiments of the present invention are described in detail below, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0030] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", " The orientation or positional relationship indicated by "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientation or positional relationship shown in the drawings, and only It is for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific or...
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The invention relates to the technical field of computer-aided engineering, in particular to a simulation calculation method for torsional stiffness of a body-in-white. Build a body-in-white model and a torsion frame in the simulation software, connect the torsion frame to the suspension mounting part in the body-in-white model, fix the torsion frame and the body-in-white model in the X and Y directions, and apply a load along the Z direction to the torsion frame The body-in-white model is twisted around the X-axis along the torsion frame, and the displacement of the connection point between the torsion frame and the suspension mounting part is recorded, and the torsional stiffness of the body-in-white model is calculated according to the applied load and the displacement of the connection point. By constructing a torsion frame in the simulation software, the present invention completely simulates the torsional stiffness test condition of the body-in-white. Since it does not involve physical investment, the acquisition of torsional stiffness is extremely convenient and inexpensive, and can be widely used in the design process of the body-in-white. The simulation method and the construction of the model are extremely simple and convenient, and have great promotion value.
Description
technical field [0001] The invention relates to the technical field of computer-aided engineering, in particular to a method for simulating and calculating the torsional stiffness of a body-in-white. Background technique [0002] Body-in-white stiffness is an important indicator of body design, which determines the ability of the vehicle to resist deformation under external forces. Body-in-white stiffness, especially torsional stiffness, is related to various properties such as durability, NVH, and handling stability. Usually, in the case of cost and weight control, it is hoped that the greater the torsional rigidity, the better, so it is necessary to conduct a test experiment on the torsional rigidity of the automobile body-in-white. The existing test experiment is to build a test system, such as the Chinese invention patent named "A Test System for Automobile Body-in-White Torsional Stiffness" with the patent number "CN102455251A". Suspension stand, power output device, ...
Claims
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IPC IPC(8): G06F30/15G06F30/17
CPCG06F30/15G06F30/17
Inventor 宫帅石朝亮屈新田谌胜王镂
Owner DONGFENG MOTOR GRP