本文主要通过实验并辅以数值计算，对伪弹性TiNi合金固支梁的落锤冲击响应进行了研究,目的是研究相变对结构动态响应的影响。结果表明固支梁在大质量块的低速冲击作用下，由早期的弹性弯曲波动响应，发展到整体结构响应。相变和相变铰的形成，改变了梁的行为，特别是相变的可逆性使梁在卸载后恢复原状，呈现出与传统理想弹塑性梁不同的响应特性。

The response of the TiNi alloy clipped beam under drop hammer impact was investigated by employing experimental and numerical methods. The purpose of this study is to explore the effect of phase transformation on the dynamic behavior of structures. The result shows that under the drop hammer impact the response of the clipped beam is the elastic flexural wave propagation in the beam during early period and then lead to structural response. The structural response of the TiNi alloy clipped beam will be different compared to the ideal elastic-plastic material as the phase transformations arise and the phase transformation hinges generate. The recoverable character of the phase transformation leads the beam recover to its original shape as the unloading fulfill.