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Method and device for determining axial force loss of ball head connecting structure of front steering knuckle

A connection structure and front steering technology, applied in the automotive field, can solve problems such as vehicle out of control, hidden safety hazards, threats to life and property safety, etc., and achieve the effects of fast calculation speed, strong applicability, and high calculation accuracy

Pending Publication Date: 2022-07-15
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because once the loss of axial force is not easy to detect, it will affect the service life of the steering knuckle ball joint connection structure and bring safety hazards
In severe cases, the connection structure of the steering knuckle ball joint will break, causing the vehicle to lose control and threatening the safety of life and property.

Method used

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  • Method and device for determining axial force loss of ball head connecting structure of front steering knuckle
  • Method and device for determining axial force loss of ball head connecting structure of front steering knuckle
  • Method and device for determining axial force loss of ball head connecting structure of front steering knuckle

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] figure 1 A flowchart of a method for determining the axial force loss of a ball joint connection structure of a front steering knuckle provided in Embodiment 1 of the present invention. To execute, the device can be implemented in software and / or hardware, such as figure 1 As shown, the method specifically includes the following steps:

[0082] see Figure 2a and Figure 2b , step 1, establish the finite element model of steering knuckle 1, ball stud 2, bushing 3 and nut 4;

[0083] The finite element model ensures that the model position of each part is consistent with the actual assembly position, and there is no structural interference between the parts.

[0084] The steering knuckle 1 is modeled using second-order tetrahedral elements, and the modeling mesh size is 1-2 mm.

[0085] The ball stud 2 and the bushing 3 are obtained by rotating a two-dimensional model, which can ensure a good contact effect on the contact surface. The modeling adopts hexahedral elem...

Embodiment 2

[0140] Image 6 This is a schematic structural diagram of a device for determining the axial force loss of a ball joint connection structure of a front steering knuckle provided in the second embodiment of the present invention. This embodiment can be applied to the case of determining the axial force loss of the front steering knuckle ball joint structure. The device can be implemented in software and / or hardware. The device can be integrated into any device provided for determining the front steering knuckle ball joint structure Axial force loss in functional devices.

[0141] The device for determining the axial force loss of the ball joint connection structure of the front steering knuckle includes:

[0142] Establish a finite element model module for establishing finite element models of steering knuckle 1, ball stud 2, bushing 3 and nut 4;

[0143] Define the connection relationship module, which is used to define the connection relationship of each part;

[0144] Cal...

Embodiment 3

[0156] Figure 7 It is a schematic structural diagram of a computer device in Embodiment 3 of the present invention. Figure 7 A block diagram of an exemplary computer device 12 suitable for use in implementing embodiments of the present invention is shown. Figure 7 The computer device 12 shown is only an example, and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention.

[0157] like Figure 7 As shown, computer device 12 takes the form of a general-purpose computing device. Components of computer device 12 may include, but are not limited to, one or more processors or processing units 16 , system memory 28 , and a bus 18 connecting various system components including system memory 28 and processing unit 16 .

[0158] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using an...

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Abstract

The invention discloses a method and device for determining the axial force loss of a front steering knuckle ball head connecting structure, and relates to the technical field of automobiles, in particular to a method and device for determining the axial force loss of a double-wishbone type front steering knuckle ball head connecting structure under the misuse working condition. According to the method, finite element models of the steering knuckle, the ball head and the bushing are established by means of finite element analysis, the interference fit relation between the steering knuckle and the bushing is considered, and the contact relation of all contact surfaces and the conical surface fit pre-tightening axial force of the bushing and the ball head are considered; in the calculation process, geometric nonlinearity and material nonlinearity are considered, the axial force loss of the double-wishbone type front steering knuckle ball head connecting structure under the misuse working condition is determined according to the change of the axial force of the ball head bolt of the steering knuckle ball head connecting structure along with time under the misuse load effect, and the method has the advantages of being high in calculation precision, high in calculation speed and high in applicability.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method and a device for determining the axial force loss of a double wishbone type front steering knuckle ball joint structure under misuse conditions. Background technique [0002] The double-wishbone front suspension structure has the advantages of high lateral stiffness, excellent anti-roll performance, and good grip performance, and is widely used in luxury cars with large bodies, full-size SUVs, pickups and even super sports cars. The double-wishbone front steering knuckle is one of the important parts in the front suspension system of the automobile chassis. As a supporting and connecting structure, the steering knuckle is responsible for transmitting and bearing the load of the automobile wheel. The steering knuckle is connected to the ball stud at the top of the control arm and the steering rod to ensure relative movement between the parts, so as to realize the up a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/17G06F119/14G06F119/04G06F111/04
CPCG06F30/23G06F30/17G06F2119/14G06F2119/04G06F2111/04
Inventor 姜大鑫韩超朱学武陈磊王微王涛武小一李继川
Owner CHINA FIRST AUTOMOBILE
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