The Assessment of a Combined Methodology for Spot Weld Failure Modeling

2004 ◽  
Author(s):  
Ching-Shan Cheng
Keyword(s):  
Spot Weld ◽  
Failure Modeling ◽  
Weld Failure

Spot Weld Failure Prediction in Safety Simulations Using MAT-240 Material Model in LS-DYNA

2015 ◽  
Author(s):  
Sivaprasad Koralla ◽  
Ganesh Bhagwant Gadekar ◽  
V Ramana Pavan Nadella ◽  
Susanta Dey
Keyword(s):  
Failure Prediction ◽  
Material Model ◽  
Spot Weld ◽  
Weld Failure

Spot Weld Failure Prediction and Simulation in Crash Analysis

2004 ◽  
Author(s):  
Xiaodong Tang
Keyword(s):  
Major Effect ◽  
Spot Weld ◽  
Vehicle Body ◽  
Design Parameters ◽  
Test Results ◽  
Crash Analysis ◽  
Spring Element ◽  
Weld Failure ◽  
Projection Equations ◽  
Prediction And Simulation

Weld failure/separation in vehicle body structures subjected to impact condition may results in component instability and thus reduced energy absorption. A new finite element method has been developed for modeling the behavior of spot welds in elastic, plastic and separation stages. This method can be used to simulate weld failure in vehicle crash analysis using a failure formulation derived from coupon test results. It is a generalized method and is intended to be applicable to any combination of the weld design parameters such as thickness, materials, coating and impact speed. The method has been validated on the crash tests on straight and S-type rails with a hat section. The CAE prediction based on the modeling procedure correlates well with the test results for all the rail crush cases. The welds are modeled using the beam-type spring element with the newly developed weld damage parameters. The baseline curves for the spring element and the detailed projection equations developed are provided in this paper. The presented method and major effect curves from the testing can also benefit the spot weld design and specification development.

Spot Weld Failure Loads under Combined Mode Loading Conditions

2001 ◽  
Author(s):  
S.-H. Lin ◽  
Jwo Pan ◽  
S. Wu ◽  
T. Tyan ◽  
P. Wung
Keyword(s):  
Spot Weld ◽  
Loading Conditions ◽  
Weld Failure ◽  
Failure Loads ◽  
Combined Mode
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