中文摘要：

在进行车身造型参数化设计时,首先对车身部件或整车进行无刚性约束的自由变形,然后对需要保持特征的部分按照＂最小刚体位移原则＂进行计算处理,从而得到＂保征＂的变体设计结果。文中给出了对汽车车身及部件应用保征变体设计方法FKMDM和自由变形（Free-Form Deformation）设计方法的对比实验结果,验证了FKMDM在车身造型参数化设计领域的适用性和有效性。

英文摘要：

In the process of parameterization design,firstly free-form deformation without rigid constraints is performed on the automobile parts or auto-body,then the parts whose features are supposed to be kept unchanged are disposed according to th＂ePrinciple of Least Rigid Body Displacement＂,so the feature-kept morphing result is obtained. Several contrastive implementation results of morphing design obtained by FKMDM and FFD（Free-Form Deformation）are presented,they demonstrate the applicability and validity of FKMDM in the field of parameterization design for auto-body modeling.