Failure loads of spot weld specimens under impact opening and shear loading conditions

2004 ◽  
Vol 44 (2) ◽  
pp. 147-157 ◽  
Author(s):  
S. -H. Lin ◽  
J. Pan ◽  
S. Wu ◽  
T. Tyan
Keyword(s):  
Shear Loading ◽  
Spot Weld ◽  
Loading Conditions ◽  
Failure Loads

EFFECT OF TENSILE SPEED ON THE FAILURE LOAD OF A SPOT WELD UNDER COMBINED LOADING CONDITIONS

2008 ◽  
Vol 22 (09n11) ◽  
pp. 1469-1474 ◽  
Author(s):  
JUNG-HAN SONG ◽  
HOON HUH ◽  
JI-HO LIM ◽  
SUNG-HO PARK
Keyword(s):  
Failure Load ◽  
Rate Sensitivity ◽  
Shear Loading ◽  
Spot Weld ◽  
Combined Loading ◽  
Failure Behavior ◽  
Loading Conditions ◽  
Dynamic Failure ◽  
Shear Loads ◽  
Failure Loads

This paper is concerned with the evaluation of the dynamic failure load of the spot weld under combined axial and shear loading conditions. The testing fixture are designed to impose the combined axial and shear load on the spot weld. Using the proposed testing fixtures and specimens, quasi-static and dynamic failure tests of the spot weld are conducted with seven different combined loading conditions. The failure load and failure behavior of the spot weld are investigated with different loading conditions. Dynamic effects on the failure load of the spot weld, which is critical for structural crashworthiness, are also examined based on the experimental data. In order to evaluate the effect of the strain rate on the failure contour of the spot weld under combined axial and shear loads, the failure loads measured from the experiment are decomposed into the two components along the axial and shear directions. Experimental results indicate that the failure contour is expanded with increasing strain rates according to the rate sensitivity of the ultimate stress for welded material.

scholarly journals Influence of Tensile Speeds on the Failure Loads of the DP590 Spot Weld under Various Combined Loading Conditions

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Jung Han Song ◽  
Hoon Huh
Keyword(s):  
Failure Load ◽  
Shear Loading ◽  
Spot Weld ◽  
Combined Loading ◽  
Failure Behavior ◽  
Shear Load ◽  
Loading Conditions ◽  
Dynamic Failure ◽  
Failure Loads ◽  
Similar Dynamic

This paper is concerned with the evaluation of the dynamic failure load of the spot weld under combined axial and shear loading conditions. The testing fixture is designed to impose the combined axial and shear load on the spot weld. Using the proposed testing fixtures and specimens, quasi-static and dynamic failure tests of the spot weld are conducted with seven different combined loading conditions. The failure load and failure behavior of the spot weld are investigated with different loading conditions. Effect of tensile speeds on the failure load of the spot weld, which is critical for structural crashworthiness, is also examined based on the experimental data. The failure loads measured from the experiment are decomposed into the two components along the axial and shear directions and failure contours are plotted with different loading speeds. Dynamic sensitivities of failure loads with various combined loading conditions were also analyzed. Experimental results indicate that the failure contour is expanded with increasing loading speeds and failure loads show similar dynamic sensitivity with respect to the loading angles.

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

Effect of Tensile Speed on the Failure Load of Laser Welding under Combined Loading Conditions

2013 ◽  
Vol 535-536 ◽  
pp. 489-492 ◽  
Author(s):  
Jiwoong Ha ◽  
Hoon Huh ◽  
Keunhwan Pack ◽  
Soonkeun Jang
Keyword(s):  
Failure Load ◽  
Pure Shear ◽  
Shear Loading ◽  
Combined Loading ◽  
Failure Behavior ◽  
Loading Conditions ◽  
Welding Condition ◽  
Shear Loads ◽  
Laser Welds ◽  
Failure Loads

This paper is concerned with the failure characteristics and the failure loads of laser welds in a SPRC340 1.2t steel sheet under combined normal and shear loading conditions. The quasi-static and dynamic failure tests were carried out under nine different combined normal and shear loads including a pure-normal load and a pure-shear load. Especially for the pure-shear condition, a testing fixture was newly designed in order to evaluate the strength of a laser-welded region fabricated by the same welding condition as a two-layered lap joint. The failure load and the failure behavior of laser welds were investigated in each loading condition. Dynamic effects on the failure load of laser welds, which are critical for structural crashworthiness, were also examined based on the experimental data. In order to evaluate the effect of the strain rate on the failure contour of laser welds under the combined normal and shear loads, the failure loads measured from the experiment were decomposed into two components along the normal and shear directions.

Door Latch Failure Risk Identification Using Virtual Testing Methods

2017 ◽  
Vol 4 (3) ◽  
Author(s):  
Keith Friedman ◽  
Khanh Bui ◽  
John Hutchinson
Keyword(s):  
Motor Vehicle ◽  
Performance Testing ◽  
Risk Identification ◽  
Side Impact ◽  
Crash Test ◽  
Loading Conditions ◽  
Passenger Vehicle ◽  
Virtual Testing ◽  
Side Door ◽  
Failure Loads

Vehicle door latch performance testing presently utilizes uniaxial quasi-static loading conditions. Current technology enables sophisticated virtual testing of a broad range of systems. Door latch failures have been observed in vehicles under a variety of conditions. Typically, these conditions involve multi-axis loading conditions. The loading conditions presented during rollovers on passenger vehicle side door latches have not been published. Rollover crash test results, rollover crashes, and physical Federal Motor Vehicle Safety Standard (FMVSS) 206 latch testing results are reviewed. The creation and validation of a passenger vehicle door latch model is described. The multi-axis loading conditions observed in virtual rollover testing at the latch location are characterized and applied to the virtual testing of a latch in the secondary latch position. The results are then compared with crash test and real world rollover results for the same latch. The results indicate that a door latch that meets the secondary latch position requirements may fail at loads substantially below the FMVSS 206 uniaxial failure loads. In the side impact mode, risks associated with door handle designs and the potential for inertial release can be considered prior to manufacturing with virtual testing. An example case showing the effects of material and spring selection illustrates the potential issues that can be detected in advance of manufacturing. The findings suggest the need for re-examining the relevance of existing door latch testing practices in light of the prevalence of rollover impacts and other impact conditions in today's vehicle fleet environment.

Fatigue of Steel Wire Under Combined Tensile and Shear Loading Conditions

2008 ◽  
pp. 361-361-17 ◽  
Author(s):  
I Verpoest ◽  
BD Notohardjono ◽  
E Aernoudt
Keyword(s):  
Steel Wire ◽  
Shear Loading ◽  
Loading Conditions

Performance of a New Yielding Rock Bolt Under Pull and Shear Loading Conditions

2019 ◽  
Vol 52 (9) ◽  
pp. 3401-3412 ◽  
Author(s):  
Xuezhen Wu ◽  
Yujing Jiang ◽  
Gang Wang ◽  
Bin Gong ◽  
Zhenchang Guan ◽  
...  
Keyword(s):  
Shear Loading ◽  
Rock Bolt ◽  
Loading Conditions
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