Abstract
Many modelling methods of representing a spot weld have developed to
evaluate structural stiffness and durability of a structure with spot welds. One of the famous
methods is to use a CWELD element. The main advantages of the CWELD element are that it
can connect a shell element to another shell element and can calculate the structural stress
based on Rupp´s method. In spite of these advantages, the property of the CWELD element is
influenced by many factors. However, intensive research on them has been rarely done. In
this research, we first determine the factors that can affect the performance of the CWELD
element and analyze the effects of the factors. Finally, the guidelines for the affecting factors
are provided for structural stiffness analysis and durability analysis.
Keywords - CWELD element, Durability, Spot weld, Structural stiffness, Structural stress