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

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.

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

Advances in Materials Science and Engineering ◽

10.1155/2015/297915 ◽

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.

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Spot Weld Failure Loads under Combined Mode Loading Conditions

10.4271/2001-01-0428 ◽

2001 ◽

Cited By ~ 23

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

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.535-536.489 ◽

2013 ◽

Vol 535-536 ◽

pp. 489-492 ◽

Cited By ~ 1

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.

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Simulating the Crack Propagation Mechanism of Pre-Cracked Concrete Specimens Under Shear Loading Conditions

Strength of Materials ◽

10.1007/s11223-015-9698-z ◽

2015 ◽

Vol 47 (4) ◽

pp. 618-632 ◽

Cited By ~ 15

Author(s):

H. Haeri

Keyword(s):

Crack Propagation ◽

Shear Loading ◽

Propagation Mechanism ◽

Loading Conditions ◽

Cracked Concrete ◽

Crack Propagation Mechanism

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Failure Loads of Spot Friction Welds in Aluminum 6111-T4 Sheets under Quasi-Static and Dynamic Loading Conditions

10.4271/2007-01-0983 ◽

2007 ◽

Cited By ~ 8

Author(s):

V.-X. Tran ◽

P.-C. Lin ◽

Jwo Pan ◽

T. Pan ◽

T. Tyan

Keyword(s):

Dynamic Loading ◽

Loading Conditions ◽

Failure Loads ◽

Dynamic Loading Conditions ◽

Static And Dynamic Loading

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Fracture behavior of 96.5Sn3.0Ag0.5Cu solder joint under mixed-mode tensile and shear loading conditions

2009 11th Electronics Packaging Technology Conference ◽

10.1109/eptc.2009.5416535 ◽

2009 ◽

Author(s):

Kok Ee Tan ◽

John H.L. Pang

Keyword(s):

Solder Joint ◽

Mixed Mode ◽

Fracture Behavior ◽

Shear Loading ◽

Loading Conditions

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Door Latch Failure Risk Identification Using Virtual Testing Methods

ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg ◽

10.1115/1.4037725 ◽

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.

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