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Hello everyone, Greetings!! I have made seam weld elements between 2 components. Then I made tied contact (Type 2 contact) between these components by considering seam elements as master component. But when I ran the crash simulation mass of 720 kg was added in these seam elements, which made the entire mass of my crash sled 3.5 times heavier than the actual weight. I have to use tied 2 contact as I wanted to use the contact interface for spot welds. I cant omit DT/NODA/CST, otherwise my simulation time is increasing exponentially. Because of crash simulation, some elements are deforming to a very small length. Thanks in advance. Regards Nitin Jain