Coupled Deflection Analysis of SMA Fiber Hybrid Composite Active Blade
The constitutive equations relating cross-sectional loads(forces and moments)to cross-sectional displacements(stretching, bending, twisting) of thin-walled laminated beams with integral shape memory alloy (SMA)active fibers was presented. The variational asymptotic method was used to formulate the force- deformation relationships equations, accounting for the presence of active SMA fibers distributed along the cross-section of the beam. The constitutive relationships for evaluation of the properties of a hybrid SMA composite ply were obtained following the rule of mixtures. The analytical expressions of the actuation components for the active beam were derived based on Tanaka’s constitutive equation and Lin’s linear phase transformation kinetics for SMA fiber. The general form of constitutive relation was applied to the case of stretching-twist coupling, corresponding to Circumferentially Uniform Stiffness (CUS). The present analysis extended the previous work done for modeling generic passive thin-walled laminated beams. Numerical results shown that significant stretching and twisting deflection occur during the phase transformation due to SMA actuation. The effects of temperature on structural response behavior during phase transformation from martensite to austenite are significant. The effects of the volume fraction of the SMA fiber, the martensitic residual strain and ply angle were also addressed.
shape memory alloy fiber composite active closed cross-sections beam static deformation control blade
Ren Yongsheng Yang Shulian Liu TingRui Wang Xiaohui
College of Mechanical and Electronic Engineering, Shandong University of Science &Technology Qindao, Shandong Institute of Business and Technology Yantai, China, 2664005
国际会议
青岛
英文
1455-1458
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）