Connection method for acceleration sensors in CAE collision model

Abstract

The invention relates to the technical field of computer aided engineering (CAE), in particular to a connection method for acceleration sensors in a CAE collision model. The method at least comprises the following steps: creating an acceleration sensor unit on a target assembly, creating a sensor coordinate system, converting the coordinate of the acceleration sensor unit to the sensorcoordinate system from a complete vehicle coordinate system, copying out the accelerationsensor unit from the target assembly, and finally enabling the accelerationsensor unit and the target assembly to be relatively static and spaced from each other. According to the method, the accelerationsensor unit and the target assembly are relatively static and spaced from each other, so that the accelerationsensor unit and the target assembly do not need to be connected together again when the position change quantity of a projection node in a projection region is smaller than a contact distance, the problem that the accelerationsensor unit and the target assembly need to be connected again when the target assembly connected with the acceleration sensor unit is changed can be solved, the working efficiency is improved, the time is saved, and the manpower cost is reduced.

Description

technical field [0001] The invention relates to the technical field of computer-aided engineering (CAE), in particular to a connection method of an acceleration sensor in a CAE collision model. Background technique [0002] In recent years, the actual vehicle test of vehicle crash safety has been an authoritative means to assess the passive safety of vehicles. Under the guidance of the guidance system, the vehicle crashes into the fixed wall. The entire collision process is recorded by high-speed camera equipment for slow playback to achieve reproduction, and the electrical measurement system sorts out the data collected by the sensors arranged in the vehicle, and compares the sorted results with the standard data to evaluate the tested vehicle collision performance. In practice, the collision physical test cycle is long, the cost is high, and there are limitations in data collection. With the development of numerical simulation technology, it has become an important meth...

AI Technical Summary

Problems solved by technology

[0004] The invention solves the technical problem that the connection relationship between the acceleration sensor and the collision model assembly needs to be re-established when the collision model assembly connected to the acceleration sensor is changed in the existing connection method of the acceleration sensor

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