The Establishment Of Balanced Elbow Model Of Armored Vehicles And Load Recognition

The dynamic load identification is one of important techniques in engineering application, which has developed quickly in recent years and developed a lot of new identifying methods. The technique of dynamic load identification can be used to identify unknown dynamic load in the case of knowing matrix of coefficient and dynamic response being measured already.In the paper, on the base of analyzing the traditional method of load identification, the paper established a test system of balanced elbow and illustrates the main issues that should be considered in the process of building the finite element model by using of Pro/E and ANSYS FEA software, including the simplification of the structure, the selection of unit types, parameter settings, load and constraints imposing, etc. According to the analysis of non-coplanar force stand under load of balanced elbow ,in the conditions of breaking down the force into"X,Y,Z"these three directions , using balanced elbow and loading wheel structural element as a measuring transducer, verifying the feasibility of the predictable pattern by the analyzing the FEA, the paper found the perfect measuring point and illustrated the strain foil arrangement ,the bridge connection design and finally obtained the system-testing matrix of coefficient and established relationship equation between actual measured response signal and identification-waiting signal , by which the paper obtained the random load of tank vehicles driving units when working in practice, namely, the time history.On the base of back calculation of measured signal, the paper obtained the load curve, the power spectrum, the frequency of the load chart; the load frequency picture provides a scientific basis for a reliable design of the balanced elbow structure and full scantling structure simulation tests.