Vehicle chassis KC simulation modeling analysis method and device based on Adams

Abstract

The invention relates to a vehicle chassis KC simulation modeling analysis method and device based on Adams. The method comprises the steps that firstly, a suspension and steering subsystem multi-body dynamic model is built; secondly, building a parameterized vehicle body subsystem multi-body dynamic model; building relevant hard points of the vehicle body subsystem; building a vehicle body subsystem visual geometric model, and performing parameterized display and hiding on the geometric model; building a vehicle body subsystem comprising a roll motion pair, and performing parametric constraint on roll motion of the vehicle body subsystem; an input communicator and an output communicator of the vehicle body subsystem and the suspension and steering subsystem are built; defining roll angle post-processing indexes of the vehicle body subsystem, the suspension and the steering subsystem; then the suspension and steering subsystem multi-body dynamic model and the parameterized vehicle body subsystem multi-body dynamic model are assembled in an Adams / Car platform, and a front suspension assembly is formed; and finally, after the front suspension assembly body is assembled, optimization simulation is carried out. According to the method, the test data of the KC test can be quickly and efficiently calibrated, and a large amount of hard spot optimization time is saved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle simulation design, and in particular to a vehicle chassis KC simulation modeling and analysis method and device based on Adams. Background Art

[0002] To speed up vehicle R&D and shorten the development cycle, it is often necessary to use simulation methods to simulate the driving and bouncing of the actual vehicle on actual roads, and then reasonably extract the suspension KC performance evaluation indicators, gain a preliminary understanding of the vehicle's early design process, and optimize the suspension's KC characteristics in the early stage to understand the performance of the entire vehicle.

[0003] The suspension K characteristic refers to the performance of the suspension system during wheel hop, and the suspension C characteristic refers to the performance of the suspension under the action of external forces and moments.

[0004] In the related art, KC roll simulation in Adams / Car is typically performed by fixing the vehicle body and applying a roll moment or roll angle to the suspension or wheels. This method does not correspond well to actual KC test bench conditions. It is difficult to quickly and efficiently calibrate with KC test data and requires a significant amount of hard point optimization time. Summary of the Invention

[0005] An embodiment of the present application provides an Adams-based vehicle chassis KC simulation modeling and analysis method to address the problem in the related art that in Adams / Car, KC roll simulation is generally achieved by fixing the vehicle body and loading the suspension or wheels with a roll moment or roll angle, which makes it difficult to calibrate with KC experimental test data quickly and efficiently and requires a lot of hard point optimization time.

[0006] A first aspect of the embodiments of the present application provides a vehicle chassis KC simulation modeling and analysis method based on Adams, comprising:

[0007] Step 1: Build a multi-body dynamics model of the suspension and steering subsystem;

[0008] Step 2: Build a parametric multi-body dynamics model of the vehicle body subsystem;

[0009] Build the relevant hard points of the body subsystem;

[0010] Build a visual geometric model of the vehicle body subsystem and perform parameterized display and hiding of the geometric model;

[0011] Build a body subsystem including the roll motion, and perform parameterized constraints on the roll motion of the body subsystem;

[0012] Build input and output communicators between the body subsystem and the suspension and steering subsystems;

[0013] Define the roll angle post-processing indicators for the body subsystem, suspension subsystem, and steering subsystem;

[0014] Step 3: Assemble the multi-body dynamics model of the suspension and steering subsystem and the parameterized multi-body dynamics model of the body subsystem in the Adams / Car platform to form a front suspension assembly;

[0015] Step 4: After the front suspension assembly is assembled, optimization simulation is performed.

[0016] In some embodiments, when constructing the multi-body dynamics model of the suspension and steering subsystem, the corresponding suspension and steering model is selected from the corresponding template integrated in the Adams / Car platform, and the multi-body dynamics model of the suspension and steering subsystem is constructed after modifying the hard points.

[0017] In some embodiments: when building the body subsystem related hard points, the body subsystem related hard points are built in the Adams / Car platform, and the body subsystem related hard points include center of mass coordinates and wheel center coordinates.

[0018] In some embodiments, after the front suspension assembly model is assembled, an optimization simulation is performed, specifically including:

[0019] Set body subsystem parameters: Switch the model to the Adams / Car standard module, select Adjust-Parameter Variable-Table, and then select the body subsystem to modify the corresponding parameters, including roll and pitch activation switches, roll motion loading method, and axle load;

[0020] Set simulation parameters: define the simulation step size, set the upper and lower limits of the roll angle to 0 degrees, and set the vertical force;

[0021] Result post-processing: Enter the simulation interface to output the body and suspension roll angle curves;

[0022] The KC test bench test data is loaded into the post-processing to conduct comparative analysis of the toe-in and camber gradient indicators under the roll condition.

[0023] In some embodiments, the parameterized constraint on the roll motion of the vehicle body subsystem includes: a parameterized constraint on the roll moment, a parameterized constraint on the roll angle, and a parameterized constraint on the vehicle body pitch.

[0024] A second aspect of the embodiment of the present application provides a vehicle chassis KC simulation modeling and analysis device based on Adams, comprising:

[0025] A first module, wherein the first module is used to build a multi-body dynamics model of the suspension and steering subsystem;

[0026] A second module, the second module is used to build a parameterized multi-body dynamics model of the vehicle body subsystem;

[0027] Build the relevant hard points of the body subsystem;

[0028] Build a visual geometric model of the vehicle body subsystem and perform parameterized display and hiding of the geometric model;

[0029] Build a body subsystem including the roll motion, and perform parameterized constraints on the roll motion of the body subsystem;

[0030] Build input and output communicators between the body subsystem and the suspension and steering subsystems;

[0031] Define the roll angle post-processing indicators for the body subsystem, suspension subsystem, and steering subsystem;

[0032] A third module is used to assemble the suspension and steering subsystem multi-body dynamics model and the parameterized body subsystem multi-body dynamics model in the Adams / Car platform to form a front suspension assembly;

[0033] The fourth module is used to perform optimization simulation after the front suspension assembly is assembled.

[0034] In some embodiments: When the first module builds the multi-body dynamics model of the suspension and steering subsystem, the corresponding suspension and steering model is selected from the corresponding template integrated in the Adams / Car platform, and the multi-body dynamics model of the suspension and steering subsystem can be built after the hard point modification.

[0035] In some embodiments: when building the body subsystem related hard points, the second module builds the body subsystem related hard points in the Adams / Car platform, and the body subsystem related hard points include the center of mass coordinates and the wheel center coordinates.

[0036] In some embodiments, the fourth module assembles the front suspension assembly model and performs optimization simulation, specifically including:

[0037] Set body subsystem parameters: Switch the model to the Adams / Car standard module, select Adjust-Parameter Variable-Table, and then select the body subsystem to modify the corresponding parameters, including roll and pitch activation switches, roll motion loading method, and axle load;

[0038] Set simulation parameters: define the simulation step size, set the upper and lower limits of the roll angle to 0 degrees, and set the vertical force;

[0039] Result post-processing: Enter the simulation interface to output the body and suspension roll angle curves;

[0040] The KC test bench test data is loaded into the post-processing to conduct comparative analysis of the toe-in and camber gradient indicators under the roll condition.

[0041] In some embodiments, the second module performs parameterized constraints on the roll motion of the vehicle body subsystem, including parameterized constraints on the roll moment, parameterized constraints on the roll angle, and parameterized constraints on the vehicle body pitch.

[0042] The beneficial effects of the technical solution provided by this application include:

[0043] The embodiment of the present application provides a vehicle chassis KC simulation modeling and analysis method and device based on Adams. The vehicle chassis KC simulation modeling and analysis method based on Adams of the present application first builds a multi-body dynamics model of the suspension and steering subsystem; secondly builds a parameterized multi-body dynamics model of the body subsystem; builds relevant hard points of the body subsystem; builds a visual geometric model of the body subsystem, and parametrically displays and hides the geometric model; builds a body subsystem including a roll motion pair, and parametrically constrains the roll motion of the body subsystem; builds input communicators and output communicators between the body subsystem and the suspension and steering subsystem; defines post-processing indicators of the roll angle of the body subsystem and the suspension and steering subsystem; then assembles the multi-body dynamics model of the suspension and steering subsystem and the parameterized multi-body dynamics model of the body subsystem in the Adams / Car platform to form a front suspension assembly; finally, after the front suspension assembly is assembled, optimization simulation is performed.

[0044] Therefore, the Adams-based vehicle chassis KC simulation modeling and analysis method of the present application builds the relevant hard points of the body subsystem in Adams / Car, including the center of mass coordinates, wheel center coordinates, etc.; builds a visual geometric model of the body subsystem, and performs parameterized display and hiding of the geometric model. Build the relevant constraints of the body subsystem's roll motion, and perform parameterized definitions of pitch and roll motion, and the loading method of roll motion (torque loading / angular displacement loading), including roll torque, roll angle, body pitch and roll motion pairs, etc., and parameterize each parameter. Build input communicators and output communicators for the body, suspension, and steering system, including wheel center matching, suspension and steering and mounting component matching, etc. By setting the relevant parameters, it can correspond well to the actual KC test bench roll condition (i.e., suspension fixed, body roll), improve the KC simulation accuracy, and can be calibrated quickly and efficiently with KC test data, saving a lot of hard point optimization time. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0046] Figure 1 This is a schematic structural diagram of a multi-body dynamics model of a suspension and steering subsystem according to an embodiment of the present application;

[0047] Figure 2 This is a schematic structural diagram of a parameterized vehicle body subsystem multi-body dynamics model according to an embodiment of the present application;

[0048] Figure 3 A schematic structural diagram of a front suspension assembly according to an embodiment of the present application;

[0049] Figure 4 An interface diagram for setting vehicle body subsystem parameters in an embodiment of the present application;

[0050] Figure 5 This is an interface diagram for setting simulation parameters for the embodiment of the present application;

[0051] Figure 6 This is an interface diagram for parameterizing the roll motion of the vehicle body subsystem according to an embodiment of the present application;

[0052] Figure 7 A comparison diagram of the body and suspension roll angle curves of the embodiment of the present application;

[0053] Figure 8 This is a comparison chart for comparative analysis of toe-in and camber gradient indicators under roll conditions in an embodiment of the present application. DETAILED DESCRIPTION

[0054] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0055] The embodiments of the present application provide a vehicle chassis KC simulation modeling and analysis method and device based on Adams, which can solve the problem in the related art that in Adams / Car, KC roll simulation is generally achieved by fixing the vehicle body and loading the suspension or wheels with roll torque or roll angle, which is difficult to calibrate with KC test data quickly and efficiently and requires a lot of hard point optimization time.

[0056] See also Figures 1 to 3 As shown, the first aspect of the embodiment of the present application provides a vehicle chassis KC simulation modeling and analysis method based on Adams, including:

[0057] Step 1: Build a multi-body dynamics model of the suspension and steering subsystem. When building the multi-body dynamics model of the suspension and steering subsystem, select the corresponding suspension and steering model from the corresponding template integrated in the Adams / Car platform. After modifying the hard points, the multi-body dynamics model of the suspension and steering subsystem can be built.

[0058] Step 2: Build a parametric multi-body dynamics model of the vehicle body subsystem, including:

[0059] Step 2.1: Build the relevant hard points of the body subsystem. When building the relevant hard points of the body subsystem, build the relevant hard points of the body subsystem in the Adams / Car platform. The relevant hard points of the body subsystem include the center of mass coordinates and wheel center coordinates, etc.

[0060] Step 2.2: Build a visual geometric model of the vehicle body subsystem and parametrically display and hide the geometric model.

[0061] Step 2.3: Build a body subsystem that includes a roll motion pair, and parametrically constrain the roll motion of the body subsystem so that the body subsystem can rotate laterally relative to the multi-body dynamics model of the suspension and steering subsystem using the roll motion pair. The parametric constraints on the roll motion of the body subsystem include: roll moment parametric constraints, roll angle parametric constraints, and body pitch parametric constraints, such as Figure 6 shown.

[0062] Step 2.4: Build the input and output communicators between the body subsystem and the suspension and steering subsystems. The input and output communicators are used to match the body subsystem with the suspension and steering subsystems, including wheel center matching, and matching the suspension and steering subsystems with mounting components such as the roll motion pair.

[0063] Step 2.5: Define the roll angle post-processing indicators for the body subsystem, suspension, and steering subsystems.

[0064] Step 3: Assemble the multi-body dynamics model of the suspension and steering subsystem and the parameterized multi-body dynamics model of the body subsystem in the Adams / Car platform to form a front suspension assembly.

[0065] Step 4: After the front suspension assembly is assembled, optimization simulation is performed.

[0066] The Adams-based vehicle chassis KC simulation modeling and analysis method of the present application embodiment establishes the relevant hard points of the body subsystem in Adams / Car, including the center of mass coordinates and wheel center coordinates; establishes a visual geometric model of the body subsystem, and parameterizes the display and hiding of the geometric model. It also establishes the relevant constraints of the body subsystem's roll motion, and parameterizes the pitch and roll motions, as well as the loading method of the roll motion (torque loading / angular displacement loading), including the roll moment, roll angle, body pitch and roll motion pairs, and parameterizes each parameter.

[0067] Build input and output communicators for the body, suspension, and steering systems, including wheel center alignment, suspension and steering system matching, and mounting component matching. By setting relevant parameters, you can precisely align with the actual KC test bench roll conditions (i.e., suspension fixed, body roll), improving KC simulation accuracy and enabling quick and efficient calibration with KC test data, saving significant time in hard point optimization.

[0068] In some alternative embodiments: See Figures 4 to 8 As shown, the embodiment of the present application provides a vehicle chassis KC simulation modeling and analysis method based on Adams. After the front suspension assembly model is assembled, the optimization simulation is performed, specifically including:

[0069] Figure 4 As shown, set the body subsystem parameters: Switch the model to the Adams / Car standard module, use Adjust-Parameter Variable-Table, and then select the body subsystem to modify the corresponding parameters, including roll and pitch activation switches, roll motion loading method, axle load, etc.

[0070] Figure 5 As shown, set the simulation parameters: define the simulation step size, set the upper and lower limits of the roll angle to 0 degrees, and set the vertical force.

[0071] Figure 7 As shown, the result post-processing: enter the simulation interface to output the body and suspension roll angle curve;

[0072] Figure 8 As shown in the figure, the KC test bench test data is loaded into the post-processing to conduct comparative analysis of the toe-in and camber gradient indicators under the roll condition.

[0073] See also Figures 1 to 3 As shown, the second aspect of the embodiment of the present application provides a vehicle chassis KC simulation modeling and analysis device based on Adams, comprising:

[0074] The first module is used to build a multi-body dynamics model of the suspension and steering subsystem. The corresponding suspension and steering model is selected from the corresponding template integrated in the Adams / Car platform. After modifying the hard points, the multi-body dynamics model of the suspension and steering subsystem can be built.

[0075] The second module is used to build a parameterized multi-body dynamics model of the vehicle body subsystem, specifically including:

[0076] Build the body subsystem related hard points. When building the body subsystem related hard points, build the body subsystem related hard points in the Adams / Car platform. The body subsystem related hard points include the center of mass coordinates and wheel center coordinates, etc.

[0077] Build a visual geometric model of the vehicle body subsystem and perform parameterized display and hiding of the geometric model.

[0078] Build a body subsystem that includes a roll motion pair, and parametrically constrain the roll motion of the body subsystem so that the body subsystem can rotate laterally relative to the multi-body dynamics model of the suspension and steering subsystem using the roll motion pair. Parametric constraints on the roll motion of the body subsystem include: roll moment parametric constraints, roll angle parametric constraints, and body pitch parametric constraints, such as Figure 6 shown.

[0079] Build input communicators and output communicators between the body subsystem and the suspension and steering subsystem. The input communicators and output communicators are used to match the body subsystem with the suspension and steering subsystem, including wheel center matching, matching of the suspension and steering subsystem with mounting components such as the roll kinematic pair, etc.

[0080] Define the roll angle post-processing indicators of the body subsystem, suspension and steering subsystem.

[0081] A third module is used to assemble the multi-body dynamics model of the suspension and steering subsystem and the parameterized multi-body dynamics model of the vehicle body subsystem in the Adams / Car platform to form a front suspension assembly;

[0082] The fourth module is used to perform optimization simulation after the front suspension assembly is assembled.

[0083] The Adams-based vehicle chassis KC simulation modeling and analysis device of the present application embodiment establishes the relevant hard points of the vehicle body subsystem in Adams / Car, including the coordinates of the center of mass and wheel center, etc.; establishes a visual geometric model of the vehicle body subsystem, and parameterizes the display and hiding of the geometric model. It also establishes the relevant constraints of the vehicle body subsystem's roll motion, and parameterizes the pitch and roll motion, as well as the loading method of the roll motion (torque loading / angular displacement loading), including the roll moment, roll angle, vehicle body pitch and roll motion pairs, and parameterizes each parameter.

[0084] Build input and output communicators for the body, suspension, and steering systems, including wheel center alignment, suspension and steering system matching, and mounting component matching. By setting relevant parameters, you can precisely align with the actual KC test bench roll conditions (i.e., suspension fixed, body roll), improving KC simulation accuracy and enabling quick and efficient calibration with KC test data, saving significant time in hard point optimization.

[0085] In some alternative embodiments: See Figures 4 to 8 As shown, the embodiment of the present application provides a vehicle chassis KC simulation modeling and analysis device based on Adams. After the front suspension assembly model of the device is assembled, an optimization simulation is performed, specifically including:

[0086] Figure 4 As shown, set the body subsystem parameters: Switch the model to the Adams / Car standard module, use Adjust-Parameter Variable-Table, and then select the body subsystem to modify the corresponding parameters, including roll and pitch activation switches, roll motion loading method, axle load, etc.

[0087] Figure 5 As shown, set the simulation parameters: define the simulation step size, set the upper and lower limits of the roll angle to 0 degrees, and set the vertical force.

[0088] Figure 7 As shown, the result post-processing: enter the simulation interface to output the body and suspension roll angle curve;

[0089] Figure 8 As shown in the figure, the KC test bench test data is loaded into the post-processing to conduct comparative analysis of the toe-in and camber gradient indicators under the roll condition.

[0090] How it works

[0091] An embodiment of the present application provides a vehicle chassis KC simulation modeling and analysis method and device based on Adams. The vehicle chassis KC simulation modeling and analysis method based on Adams of the present application first builds a multi-body dynamics model of the suspension and steering subsystem; secondly builds a parameterized multi-body dynamics model of the vehicle body subsystem; builds relevant hard points of the vehicle body subsystem; builds a visual geometric model of the vehicle body subsystem, and performs parameterized display and hiding of the geometric model.

[0092] Build a body subsystem including a roll motion pair, and perform parametric constraints on the roll motion of the body subsystem; build input and output communicators between the body subsystem and the suspension and steering subsystems; define the post-processing indicators of the roll angle of the body subsystem and the suspension and steering subsystems; then assemble the multi-body dynamics model of the suspension and steering subsystem and the parametric multi-body dynamics model of the body subsystem in the Adams / Car platform to form a front suspension assembly; finally, after the front suspension assembly is assembled, perform optimization simulation.

[0093] Therefore, the Adams-based vehicle chassis KC simulation modeling and analysis method of this application builds the body subsystem related hard points in Adams / Car, including the center of mass coordinates, wheel center coordinates, etc.; builds a visual geometric model of the body subsystem, and parameterizes the display and hiding of the geometric model. Builds the body subsystem roll motion related constraints, and parameterizes the pitch and roll motions, the loading method of the roll motion (torque loading / angular displacement loading), etc., including the roll moment, roll angle, body pitch and roll motion pairs, etc., and parameterizes each parameter.

[0094] Build input and output communicators for the body, suspension, and steering systems, including wheel center alignment, suspension and steering system matching, and mounting component matching. By setting relevant parameters, you can precisely align with the actual KC test bench roll conditions (i.e., suspension fixed, body roll), improving KC simulation accuracy and enabling quick and efficient calibration with KC test data, saving significant time in hard point optimization.

[0095] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0096] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0097] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A vehicle chassis KC simulation modeling and analysis method based on Adams, characterized in that: include: Step 1: Build a multi-body dynamics model of the suspension and steering subsystem; Step 2: Build a parametric multi-body dynamics model of the vehicle body subsystem; Build the relevant hard points of the body subsystem; Build a visual geometric model of the vehicle body subsystem and perform parameterized display and hiding of the geometric model; Build a body subsystem including a roll motion pair and perform parameterized constraints on the roll motion of the body subsystem; Build input and output communicators between the body subsystem and the suspension and steering subsystems; Define the roll angle post-processing indicators for the body subsystem, suspension subsystem, and steering subsystem; Step 3: Assemble the multi-body dynamics model of the suspension and steering subsystem and the parameterized multi-body dynamics model of the body subsystem in the Adams / Car platform to form a front suspension assembly; Step 4: After the front suspension assembly is assembled, optimization simulation is performed.

2. The vehicle chassis KC simulation modeling and analysis method based on Adams as claimed in claim 1, characterized in that: When building the multi-body dynamics model of the suspension and steering subsystem, the corresponding suspension and steering model is selected from the corresponding template integrated in the Adams / Car platform, and the multi-body dynamics model of the suspension and steering subsystem can be built after modifying the hard points.

3. The vehicle chassis KC simulation modeling and analysis method based on Adams as claimed in claim 1, characterized in that: When constructing the body subsystem related hard points, the body subsystem related hard points are constructed in the Adams / Car platform, and the body subsystem related hard points include the center of mass coordinates and the wheel center coordinates.

4. The vehicle chassis KC simulation modeling and analysis method based on Adams as claimed in claim 1, characterized in that: After the front suspension assembly model is assembled, an optimization simulation is performed, specifically including: Set body subsystem parameters: Switch the model to the Adams / Car standard module, go to Adjust-ParameterVariable-Table, and then select the body subsystem to modify the corresponding parameters, including roll and pitch activation switches, roll motion loading method, and axle load; Set simulation parameters: define the simulation step size, set the upper and lower limits of the roll angle to 0 degrees, and set the vertical force; Result post-processing: Enter the simulation interface to output the body and suspension roll angle curves; The KC test bench test data is loaded into the post-processing to conduct comparative analysis of the toe-in and camber gradient indicators under the roll condition.

5. The vehicle chassis KC simulation modeling and analysis method based on Adams as claimed in claim 1, characterized in that: The parameterized constraints on the roll motion of the vehicle body subsystem include: parameterized constraints on the roll moment, parameterized constraints on the roll angle, and parameterized constraints on the vehicle body pitch.

6. A vehicle chassis KC simulation modeling and analysis device based on Adams, characterized in that: include: A first module, wherein the first module is used to build a multi-body dynamics model of the suspension and steering subsystem; A second module, the second module is used to build a parameterized multi-body dynamics model of the vehicle body subsystem; Build the relevant hard points of the body subsystem; Build a visual geometric model of the vehicle body subsystem and perform parameterized display and hiding of the geometric model; Build a body subsystem including the roll motion, and perform parameterized constraints on the roll motion of the body subsystem; Build input and output communicators between the body subsystem and the suspension and steering subsystems; Define the roll angle post-processing indicators for the body subsystem, suspension subsystem, and steering subsystem; A third module is used to assemble the suspension and steering subsystem multi-body dynamics model and the parameterized body subsystem multi-body dynamics model in the Adams / Car platform to form a front suspension assembly; The fourth module is used to perform optimization simulation after the front suspension assembly is assembled.

7. The vehicle chassis KC simulation modeling and analysis device based on Adams as claimed in claim 6, characterized in that: When building the multi-body dynamics model of the suspension and steering subsystem, the first module selects the corresponding suspension and steering model from the corresponding template integrated in the Adams / Car platform, and then builds the multi-body dynamics model of the suspension and steering subsystem after modifying the hard points.

8. The vehicle chassis KC simulation modeling and analysis device based on Adams as claimed in claim 6, characterized in that: When building the body subsystem related hard points, the second module builds the body subsystem related hard points in the Adams / Car platform, and the body subsystem related hard points include the center of mass coordinates and the wheel center coordinates.

9. The vehicle chassis KC simulation modeling and analysis device based on Adams as claimed in claim 6, characterized in that: The fourth module assembles the front suspension assembly model and performs optimization simulation, specifically including: Set body subsystem parameters: Switch the model to the Adams / Car standard module, go to Adjust-ParameterVariable-Table, and then select the body subsystem to modify the corresponding parameters, including roll and pitch activation switches, roll motion loading method, and axle load; Set simulation parameters: define the simulation step size, set the upper and lower limits of the roll angle to 0 degrees, and set the vertical force; Result post-processing: Enter the simulation interface to output the body and suspension roll angle curves; The KC test bench test data is loaded into the post-processing to conduct comparative analysis of the toe-in and camber gradient indicators under the roll condition.

10. The vehicle chassis KC simulation modeling and analysis device based on Adams as claimed in claim 6, characterized in that: The second module performs parameterized constraints on the roll motion of the vehicle body subsystem, including: parameterized constraints on the roll moment, parameterized constraints on the roll angle, and parameterized constraints on the vehicle body pitch.

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