Finite element-based steering knuckle test simulation model containing auxiliary frame connecting rod

Abstract

The utility model discloses a finite element-based steering knuckle test simulation model containing an auxiliary frame connecting rod, which comprises a steering knuckle body, a hub bearing body fixedly connected to the steering knuckle body, a hub tool body fixedly connected to the hub bearing body, an upper ball pin body fixedly connected to one end of the steering knuckle body, and a lower ball pin body fixedly connected to the other end of the steering knuckle body. A connecting base is installed on the upper ball pin body, a first connecting rod body is fixedly connected to the connecting base, a fixing tool is hinged to one end of the first connecting rod body, and a second connecting rod body is arranged on one side of the first connecting rod body. According to the utility model, the influence of the connecting rod of the auxiliary frame on the stress and deformation of the steering knuckle is considered, the limit working condition in the use of the whole vehicle can be reproduced, the ball pin adopts a finite element model, the deformation of the position of the ball pin hole of the steering knuckle can be reflected, and the stress and deformation of the ball pin of the steering knuckle can be reflected, so that the finite element calculation result is closer to the test; therefore, the structural design of the steering knuckle is effectively guided in the early development stage.

Description

Technical Field

[0001] The utility model relates to the technical field of steering knuckle test simulation models, and particularly relates to a steering knuckle test simulation model with a subframe link based on finite element. Background Technique

[0002] The steering knuckle plays a crucial role in the overall structure of an automobile and is one of the key parts. In the prior art, the finite element simulation means for the steering knuckle mainly focus on the simulation of the single steering knuckle without the subframe link. This kind of single steering knuckle simulation analysis cannot reflect the extreme working conditions in the whole vehicle use. And in the existing technology, the connection between the steering knuckle and the ball pin is generally simplified directly by using the RBe2 element, resulting in the inability to reflect the deformation and force conditions at the ball pin of the steering knuckle. Therefore, a steering knuckle test simulation model with a subframe link based on finite element is proposed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a steering knuckle test simulation model with a subframe link based on finite element to solve the problems put forward in the above background technique.

[0004] To solve the above technical problems, the utility model provides the following technical solution: A steering knuckle test simulation model with a subframe link based on finite element, including a steering knuckle body, a hub bearing body is fixedly connected to the steering knuckle body, a hub tooling body is fixedly connected to the hub bearing body, an upper ball pin body is fixedly connected to one end of the steering knuckle body, a connecting seat is installed on the upper ball pin body, a first link body is fixedly connected to the connecting seat, a fixing tooling is hinged to one end of the first link body, a second link body is arranged on one side of the first link body, and one end of the second link body is fixedly connected to the connecting seat and the other end is hinged to the fixing tooling, a steering tie rod body is hinged to the fixing tooling, and a steering tie rod ball pin body is hinged to the other end of the steering tie rod body and the steering tie rod ball pin body is fixedly connected to the steering knuckle body.

[0005] Preferably, a lower ball pin body is fixedly connected to the other end of the steering knuckle body.

[0006] Preferably, an oil cylinder loading block body is fixedly connected to the hub tooling body.

[0007] Preferably, a first fixing seat is fixedly connected to the fixing tooling, a steering tie rod outer ball pin is fixedly connected to the first fixing seat, and the steering tie rod outer ball pin is hinged to the steering tie rod body.

[0008] Preferably, a second fixing seat is fixedly connected to the fixing tooling, a first link ball pin is fixedly connected to the second fixing seat, and the first link ball pin is hinged to the second link body.

[0009] Preferably, a third fixing seat is fixedly connected to the fixing tooling, a second link ball pin is fixedly connected to the third fixing seat, and the second link ball pin is hinged to the first link body.

[0010] The present utility model provides a steering knuckle test simulation model based on finite element for a subframe link. Its advantages are as follows: The present utility model takes into account the influence of the subframe link on the force and deformation of the steering knuckle, can reproduce the extreme working conditions during the use of the whole vehicle, and the ball pin adopts a finite element model, which can reflect the deformation at the position of the ball pin hole of the steering knuckle, and can reflect the force and deformation at the ball pin of the steering knuckle, so that the finite element calculation results are closer to the test, thereby effectively guiding the structural design of the steering knuckle in the early development stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 is a schematic three-dimensional overall structure diagram of the present utility model;

[0013] Figure 2 is a schematic diagram of the finite element model of the steering knuckle of the present utility model;

[0014] Figure 3 is a schematic diagram of the finite element model of the upper ball pin of the present utility model;

[0015] Figure 4 is a schematic diagram of the finite element model of the steering tie rod ball pin of the present utility model;

[0016] Figure 5 is a schematic diagram of the lower ball pin RBe2 model of the present utility model.

[0017] In the figure: 1. Knuckle body; 11. Upper ball joint body; 12. Hub bearing body; 13. Lower ball joint body; 14. Steering tie rod ball joint body; 2. Connecting seat; 21. First connecting rod body; 22. Second connecting rod body; 3. Steering tie rod body; 4. Fixing tooling; 41. First fixing seat; 42. Outer ball joint of steering tie rod; 43. Second fixing seat; 44. Ball joint of first connecting rod; 45. Third fixing seat; 46. Ball joint of second connecting rod; 5. Hub tooling body; 51. Oil cylinder loading block body; 61. Finite element model of knuckle; 62. Finite element model of hub bearing; 63. Finite element model of hub tooling; 64. Finite element model of oil cylinder loading block; 65. Finite element model of upper ball joint; 66. Finite element model of steering tie rod ball joint; 67. Simplified be6m model of first connecting rod; 68. Simplified be6m model of second connecting rod; 69. Simplified be6m model of steering tie rod; 610. RBe2 model of upper ball joint ball head; 611. RBe2 model of steering tie rod ball joint ball head; 612. RBe2 model of lower ball joint. Detailed implementation manners

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to the attached Figure 1 - attached Figure 5, an embodiment provided by the present utility model: a steering knuckle test simulation model based on finite element including a steering knuckle body 1, a hub bearing body 12 fixedly connected to the steering knuckle body 1, a hub tooling body 5 fixedly connected to the hub bearing body 12, an upper ball pin body 11 fixedly connected to one end of the steering knuckle body 1, a connecting seat 2 installed on the upper ball pin body 11, a first connecting rod body 21 fixedly connected to the connecting seat 2, a fixing tooling 4 hinged to one end of the first connecting rod body 21, a second connecting rod body 22 arranged on one side of the first connecting rod body 21, and one end of the second connecting rod body 22 fixedly connected to the connecting seat 2 and the other end hinged to the fixing tooling 4, a steering tie rod body 3 hinged to the fixing tooling 4, the other end of the steering tie rod body 3 hinged to a steering tie rod ball pin body 14, and the steering tie rod ball pin body 14 fixedly connected to the steering knuckle body 1; a lower ball pin body 13 fixedly connected to the other end of the steering knuckle body 1; an oil cylinder loading block body 51 fixedly connected to the hub tooling body 5; a first fixing seat 41 fixedly connected to the fixing tooling 4, a steering tie rod outer ball pin 42 fixedly connected to the first fixing seat 41, and the steering tie rod outer ball pin 42 hinged to the steering tie rod body 3; a second fixing seat 43 fixedly connected to the fixing tooling 4, a first connecting rod ball pin 44 fixedly connected to the second fixing seat 43, and the first connecting rod ball pin 44 hinged to the second connecting rod body 22; a third fixing seat 45 fixedly connected to the fixing tooling 4, a second connecting rod ball pin 46 fixedly connected to the third fixing seat 45, and the second connecting rod ball pin 46 hinged to the first connecting rod body 21.

[0020] Working principle: The implementation method of the present utility model is specifically as follows: In the C6TI6 software, remove the ball head parts of the upper ball pin body 11 and the steering tie rod ball pin body 14, and import the 3D digital models of the knuckle body 1, the hub bearing body 12, the hub tooling body 5, the oil cylinder loading block body 51, the processed upper ball pin body 11, and the steering tie rod ball pin body 14 into the 6B6QUS software, and divide the meshes. Respectively establish a knuckle finite element model 61, a hub bearing finite element model 62, a hub tooling finite element model 63, an oil cylinder loading block finite element model 64, an upper ball pin finite element model 65, and a steering tie rod ball pin finite element model 66, and assign their corresponding material properties to the above finite element models respectively. Establish cont6ct contacts in the contact areas of the knuckle finite element model 61, the hub bearing finite element model 62, the upper ball pin finite element model 65, and the steering tie rod ball pin finite element model 66. The knuckle finite element model 61 and the hub bearing finite element model 62 respectively use RBe2 elements to simulate bolt connections. Establish TIE constraint connections in the contact areas of the hub tooling finite element model 63, the oil cylinder loading block finite element model 64, and the hub bearing finite element model 62. According to the actual positions of the first link body 21, the second link body 22, and the steering tie rod body 3 in the test tooling, input the coordinates of their respective inner and outer ends, and respectively establish corresponding first link be6m simplified models 67, second link be6m simplified models 68, and steering tie rod be6m simplified models 69. The above is for reference in the appendix Figure 2 ; Establish an upper ball pin ball head RBe2 model 610, grab the slave node on the upper ball pin finite element model 65, adjust the master node to the center of the ball of the upper ball pin body 11, and also adjust the outer ends of the first link body 21 and the second link body 22 to the center of the ball of the upper ball pin body 11. Through the bonding command, make these three points the same point. For reference in the appendix Figure 3 ; Establish a steering tie rod ball pin ball head RBe2 model 611, grab the slave node on the steering tie rod ball pin finite element model 66, adjust the master node to the center of the ball of the steering tie rod ball pin body 14, and also adjust the outer end of the steering tie rod body 3 to the center of the ball of the steering tie rod ball pin body 14. Make these two points the same point through the bonding command. For reference in the appendix Figure 4 ; Establish a lower ball pin RBe2 model 612, grab the slave node on the knuckle finite element model 61, and adjust the master node to the center of the ball of the lower ball pin body 13. For reference in the appendix Figure 5;In actual tests, the inner ends of the first link body 21, the inner ends of the second link body 22, and the inner end of the steering tie rod body 3 are respectively connected to the fixing tooling 4 through the second link ball pin 46, the first link ball pin 44, and the steering tie rod outer ball pin 42; in finite element analysis, there is no need to reflect the fixing tooling 4. It is only necessary to fix the degrees of freedom of the inner ends of the first link body 21, the inner ends of the second link body 22, the inner end of the steering tie rod body 3, and the center of the ball of the lower ball pin body 13. Apply the load required by the test to the finite element model 64 of the oil cylinder loading block, submit it to 6B6QUS for calculation, check the calculation results of 6B6QUS, and compare them with the actual test.

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A finite element based steering knuckle test simulation model containing a subframe link, comprising a steering knuckle body (1), characterized in that: The steering knuckle body (1) is fixedly connected to a wheel hub bearing body (12), the wheel hub bearing body (12) is fixedly connected to a wheel hub tooling body (5), one end of the steering knuckle body (1) is fixedly connected to an upper ball pin body (11), a connecting seat (2) is installed on the upper ball pin body (11), a first connecting rod body (21) is fixedly connected to the connecting seat (2), one end of the first connecting rod body (21) is hinged to a fixing tooling (4), a second connecting rod body (22) is arranged on one side of the first connecting rod body (21), one end of the second connecting rod body (22) is fixedly connected to the connecting seat (2), and the other end is hinged to the fixing tooling (4), a steering tie rod body (3) is hinged to the fixing tooling (4), the other end of the steering tie rod body (3) is hinged to a steering tie rod ball pin body (14), and the steering tie rod ball pin body (14) is fixedly connected to the steering knuckle body (1).

2. The finite element based steering knuckle test simulation model containing a subframe link according to claim 1, characterized in that: The other end of the steering knuckle body (1) is fixedly connected to a lower ball pin body (13).

3. The finite element based steering knuckle test simulation model containing a subframe link according to claim 1, characterized in that: The wheel hub tooling body (5) is fixedly connected to a cylinder loading block body (51).

4. The finite element based steering knuckle test simulation model containing a subframe link according to claim 1, characterized in that: The fixing tool (4) is fixedly connected to a first fixing seat (41), the first fixing seat (41) is fixedly connected to an outer ball pin (42) of a steering rod, and the outer ball pin (42) of the steering rod is hinged to the steering rod body (3).

5. The finite element based steering knuckle test simulation model containing a subframe link according to claim 4, characterized in that: The fixing tool (4) is fixedly connected to a second fixing seat (43), the second fixing seat (43) is fixedly connected to a first connecting rod ball pin (44), and the first connecting rod ball pin (44) is hinged to the second connecting rod body (22).

6. The finite element based steering knuckle test simulation model containing a subframe link according to claim 5, characterized in that: The fixing tool (4) is fixedly connected to a third fixing seat (45), the third fixing seat (45) is fixedly connected to a second connecting rod ball pin (46), and the second connecting rod ball pin (46) is hinged to the first connecting rod body (21).

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