Power assembly suspension system rigid body and support elastomer combined modal analysis method

A powertrain and suspension system technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of inefficiency and time-consuming, lack of simulation of powertrain rigid body and bracket elastic body, and unfavorable NVH Work and other issues, to achieve strong guiding significance and improve the effect of system simulation

Active Publication Date: 2021-07-13
FAW CAR CO LTD
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Problems solved by technology

However, in the actual operation of the vehicle, the powertrain mounting system as a whole realizes the function of blocking and attenuating the vibration of the powertrain. The existing modal analysis of the rigid body of the powertrain and the elastic body of the bracket will cause a difference with the simulation level of the whole vehicle. Insufficient, and the process of performing modal analysis separately is inefficient and time-consuming, which is not conducive to the subsequent NVH work of the system

Method used

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  • Power assembly suspension system rigid body and support elastomer combined modal analysis method
  • Power assembly suspension system rigid body and support elastomer combined modal analysis method

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[0040] In order to clearly and completely describe the technical solution of the present invention and its specific working process, in conjunction with the accompanying drawings, the specific implementation of the present invention is as follows:

[0041] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

[0042] In the present i...

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Abstract

According to the combined modal analysis method for the rigid body and the support elastomer of the power assembly suspension system, the rigid body and the support elastomer of the power assembly suspension system are used as a whole to establish a combined model, then constraint modal calculation is carried out according to the whole combined model, and finally the whole modal is evaluated according to the obtained result. According to the method, the power assembly suspension system rigid body and the support elastic body are combined for modal analysis, the system simulation degree is effectively improved, more time is saved, efficiency is higher, and the method has very high guiding significance for subsequent NVH work of the system.

Description

technical field [0001] The invention belongs to the technical field of modal analysis of a powertrain mounting system, and in particular relates to a combined modal analysis method of a rigid body and a bracket elastic body of a powertrain mounting system. Background technique [0002] The powertrain suspension system mainly plays the role of connecting the body frame and the powertrain, supporting the powertrain, limiting the movement of the powertrain, and blocking and attenuating the vibration of the powertrain. Among them, in order to achieve the function of blocking and attenuating the vibration of the powertrain, the powertrain mount system needs to do the modal analysis of the powertrain rigid body and the elastic body modal analysis of the bracket during the design process. [0003] The so-called modal analysis is a modern method to study the dynamic characteristics of structures, and it is the application of system identification method in the field of engineering v...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/15G06F30/23G06F111/04G06F119/14
CPCG06F30/17G06F30/15G06F30/23G06F2111/04G06F2119/14Y02T90/00
Inventor 张鹏
Owner FAW CAR CO LTD
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