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1、Figure 1. Electro-mecha ni cal automobile crash sen sor.Bar E'ements with Slide Line Element propertiesTrlangufar Shell Elements with Bezler 3-D Rigid Surface propertiesBar Elements with Slide _ine Interface ISL) propertiesEnforced x-translationQuadri I at e日 I Shell Elements with Rigid Surface
2、Interface (IRS) properties (coincident with shell elements making up Springl jQuadrllateral Slhell Elements making up Spring 1 & SpringGlobal Coordinate SystemFigure 2. Electro-mecha ni cal sen sor fin ite eleme nt mesh.YFigure 3. Electro-mecha nical sen sor deflected shape.30U-5040301004681012D
3、isplacement-FEA Results亠 Experimental ResultsFigure 4. Electro-mecha nical sen sor force-displaceme ntresp onse.%Differe nee Betwee n FEA and Experime ntal ResultsSen sor 1Force at PreloadForce atspri ngl-to-spri ng2con tactForce at full ball travelA-2BTable 1. Comparis on of FEA versus Experime nta
4、l Force-Displaceme nt Resp on ses.Plastic HousingBallSpring 1SpringZ图1机电汽车碰撞传感器。Triangular Shell Elements with Bezler 9-D Rigid Surface prpertieBar Elements with Slide LineInterface (ISL) properties_IBar Elements with Slide/Line Element propertiesEnforced x-tranalation/uadrllateral shell Elements wi
5、th Rigid Surface Interface (IRS) properdtes fcoincident with shell elements making up SpringlQuadrilateral Shell Elemerts making up Springl & SprlngZCj I obaP Co ordinate System图2机电传感器的有限元网格。图3机电传感器偏转的形状。ooLLi11111110 125040302010002468DisplacementFEA Results Experimental Results图4机电传感器力位移响应。%Differe nee Betwee n FEA and Experime ntal ResultsSen sor 1Force at PreloadForce at spri ng1-to-Spring2 con tactForce at full ball travelA-2B表1比较有限兀分析实验的力位移响应。