基于MFC驱动的结构热变形物理模拟方法

Physical Simulation Method of Thermal Deformation of Structure Based on MFC Drive

该文提出一种基于压电纤维复合材料(MFC)的结构热变形物理模拟方法,建立了悬臂梁结构热变形与MFC驱动变形的相关性方程,并与有限元仿真进行对比验证。面向复合材料层合板以结构热变形模拟为目标,利用优化的方法反求出MFC的驱动电压,从而指导MFC驱动实验。结果表明,对于均质悬臂梁的弯曲变形,仿真结果与理论表达式一致;面向层合板的弯扭耦合变形、MFC驱动变形与热变形的测点位移误差均在5%内,验证了该文提出的物理模拟方法的有效性。

A physical simulation method for structural thermal deformation based on the macro fiber composites(MFC)is proposed in this paper.The correlation equation between the thermal deformation of the cantilever beam structure and the MFC-driven deformation is established.And it is compared and verified with the finite element simulation.For the composite laminates,aiming at the simulation of the structural thermal deformation,the driving voltage of MFC is inversely calculated by using the optimized method,so as to guide the d MFC riving experiment.The results show that the simulation results are consistent with the theoretical expression for the bending deformation of the homogeneous cantilever beam.The displacement errors of the measuring points between the MFC-driven deformation and thermal deformation are all within 5%for the bending-torsional coupled deformation of the laminate,which verifies the effectiveness of the physical simulation method proposed in the paper.