形状记忆合金混杂复合材料弯曲变形的设计

为了预报形状记忆合金混杂复合材料的物理性能与弯曲变形能力,提出了兼顾常规力学性能和主动变形能力的系统的设计方法.以形状记忆合金体积含量为主要设计变量,分析了丝状、带状及板状形状记忆合金埋入复合材料层合板后,这种混杂复合材料力学性能的变化.经过某种特殊加工的板状NiTi合金,不但增大了NiTi合金的体积含量,还增大了形状记忆合金电阻值,以此来提高NiTi合金的响应速度.采用有限元方法进行设计计算及分析,验证了该设计方法的正确性.

Design of bending for the SMA hybrid composites

In order to predict performance and bending ability of the shape memory alloy (SMA) hybrid composites (SMAHC), a systemic design method, which gives consideration to conventional performance and unique ability of large rang initiative deformation, has been brought forward. When the main design parameter has been choused the SMA volume fraction and the SMA wire, ribbon, and plate has been embedded, the performance of SMAHC changes. Having been processed by some especial method, the SMA plate increases the volume fraction and resistance of SMA. So, respond speed of SMA has been increased. Finite element method has been used in the design and analysis and this design method has been validated.