Optimal crashworthiness design of a spot-welded thin-walled hat section

Xiang, Yujiang; Wang, Qian; Zhong, Fan; Fang, Hsu Wei

doi:10.1016/j.finel.2006.01.001

Cited by 92 publications

(27 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that it is the stiffness of sub-assemblies which are the main sources of overall stiffness in the structure while the contribution of the spot welds is significant up to a certain number beyond which contribution becomes negligible [13]. This effect can be observed in the Table 1 where we see that an optimized design D3 can perform nearly as well, as the over-populated design D2 with a much smaller number of spot welds.…”

Section: Discussionmentioning

confidence: 77%

An adaptive optimization procedure for spot-welded structures

Bhatti¹,

Ouisse²,

Cogan³

2011

Computers & Structures

View full text Add to dashboard Cite

a b s t r a c tThe behavior of a spot welded structure under dynamic loads is strongly influenced by the number and locations of the resistance spot welds. The design problem requires the number and locations of spot welds to be optimized so as to obtain reasonable trade-offs between manufacturing cost and structural performance. An adaptive optimization procedure is proposed which iteratively adds and removes spot welds based on decision indicators in order to correct for the approximations made in the iterative process. In practice, it is possible that some spot welds may be defective or even missing when structure leaves the assembly line. Therefore, a simple robustness indicator is formulated to characterize the impact of the number of defective or missing spot welds on the system performance. This indicator provides a useful decision making tool for deciding both how many spot welds should be inspected following assembly as well as pointing to a small number of critical spot welds that should be reinforced. The proposed methodologies will be illustrated on a full body-in-white structure for a car.

show abstract

Section: Discussionmentioning

confidence: 77%

An adaptive optimization procedure for spot-welded structures

Bhatti¹,

Ouisse²,

Cogan³

2011

Computers & Structures

View full text Add to dashboard Cite

show abstract

“…The GRF-equilibrium inclusion was originally from contact mechanics [51,67,82,83]. The inverse dynamics optimization also was used by many researchers before [10,26].…”

Section: Discussionmentioning

confidence: 99%

Hybrid predictive dynamics: a new approach to simulate human motion

2012

Self Cite

View full text Add to dashboard Cite

“…When the cross-section is changed or combined the behavior of the tube also changes [1], therefore it is a herculean task for designers and engineers to find out the best configuration for a circumstantial exercise. Due to individualize characteristics of the different cross-section, numerous probe is conducted by researchers including rectangular, hexagonal, triangular, pentagonal, octagonal, 12-sided star, 16-sided star, lateral corrugations to name a few [2][3][4][5]. Z. fan conducted quasi-static axial compression test on thin-walled tubes with different cross-sections.…”

Section: Introductionmentioning

confidence: 99%