Construction Procedure of Spot Weld Failure Model for Crash Simulation

2016 ◽  
pp. 67-75
Author(s):  
J. Ha ◽  
J.-H. Lim ◽  
C.-Y. Oh
Keyword(s):  
Spot Weld ◽  
Failure Model ◽  
Crash Simulation ◽  
Weld Failure ◽  
Construction Procedure

Determination of Spot Weld Modeling Parameters from Test Data for Finite Element Crash Simulation

2004 ◽  
Author(s):  
Chelliah Madasamy ◽  
Tau Tyan ◽  
Omar Faruque ◽  
Thierry Guimberteau
Keyword(s):  
Finite Element ◽  
Test Data ◽  
Spot Weld ◽  
Crash Simulation

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

DYNAMIC FAILURE OF A SPOT WELD IN LAP–SHEAR TESTS UNDER COMBINED LOADING CONDITIONS

2008 ◽  
Vol 22 (31n32) ◽  
pp. 5527-5532 ◽  
Author(s):  
J. H. SONG ◽  
J. W. HA ◽  
H. HUH ◽  
J. H. LIM ◽  
S. H. PARK
Keyword(s):  
Failure Load ◽  
Spot Weld ◽  
Combined Loading ◽  
Dynamic Failure ◽  
Failure Model ◽  
Dynamic Effects ◽  
Shear Tests ◽  
Loading Rates ◽  
Lap Shear ◽  
Failure Loads

This paper is concerned with the evaluation of the dynamic failure load in the lap-shear tests of a spot weld. Dynamic lap-shear tests of a spot weld in SPRC340R were conducted with different tensile speeds ranging from 5×10-5 m/sec to 5.0 m/sec. Dynamic effects on the failure load of a spot weld are examined based on the experimental data. Experimental results indicate that failure strength increases with increasing loading rates. Finite element analyses of dynamic lap-shear tests were also performed considering the failure of a spot weld. A spot weld is modeled with a beam element and dynamic failure model is utilized in order to describe the failure of a spot weld in the simulation. The failure loads obtained from the analyses are compared to those from the lap-shear tests. The comparison shows that the failure loads obtained from the analyses are close in consistence with those obtained from the experiments.

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.

Modeling of Spot Weld under Impact Loading and Its Effect on Crash Simulation

2006 ◽  
Author(s):  
Omar Faruque ◽  
Nripen Saha ◽  
Kiran Mallela ◽  
Tau Tyan ◽  
Chelliah Madasamy ◽  
...  
Keyword(s):  
Impact Loading ◽  
Spot Weld ◽  
Crash Simulation
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