Dynamic stiffness evaluation and test method for vehicle body attachment point

Dynamic stiffness evaluation and test method for vehicle body attachment point

The invention relates to a dynamic stiffness evaluation and test method for vehicle body attachment points. The method can be used for dynamic stiffness analysis of various vehicle body attachment points, and comprises the following steps: S1, installing a three-way sensor at an attachment point thr...

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Hauptverfasser: HUANG CHAOYONG, YIN HESHUN, ZHONG CHENGPING
Format: Patent
Sprache:chi ; eng
Schlagworte:
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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creator HUANG CHAOYONG
YIN HESHUN
ZHONG CHENGPING
description The invention relates to a dynamic stiffness evaluation and test method for vehicle body attachment points. The method can be used for dynamic stiffness analysis of various vehicle body attachment points, and comprises the following steps: S1, installing a three-way sensor at an attachment point through a tool piece or a fastener, wherein the three-way sensor is connected with an LMS testing system; 2, knocking a force hammer excitation point beside the attachment point of the vehicle body through a force hammer, and transmitting data acquired by the three-way sensor to the LMS testing system to obtain a dynamic stiffness function curve k1 at each attachment point; S3, repeatedly performing the step S1 and the step S2 until the dynamic stiffness function curves k1, k2... of all the n vehicle body attachment points are obtained; and S4, obtaining the comprehensive dynamic stiffness function of each attachment point through the following formula defined in the specification. According to the invention, the comp
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The method can be used for dynamic stiffness analysis of various vehicle body attachment points, and comprises the following steps: S1, installing a three-way sensor at an attachment point through a tool piece or a fastener, wherein the three-way sensor is connected with an LMS testing system; 2, knocking a force hammer excitation point beside the attachment point of the vehicle body through a force hammer, and transmitting data acquired by the three-way sensor to the LMS testing system to obtain a dynamic stiffness function curve k1 at each attachment point; S3, repeatedly performing the step S1 and the step S2 until the dynamic stiffness function curves k1, k2... of all the n vehicle body attachment points are obtained; and S4, obtaining the comprehensive dynamic stiffness function of each attachment point through the following formula defined in the specification. 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subjects MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
title Dynamic stiffness evaluation and test method for vehicle body attachment point
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