Results 111 to 120 of about 19,359 (229)

Validating dynamic tensile mechanical properties of sheet steels for automotive crash applications [PDF]

open access: yes, 2007
A thin-wall open channel beam, fabricated from high strength Dual Phase sheet steel, subjected to 3-point bending and constant velocity boundary condition, is investigated to validate material performance for automotive crash applications.
Buckley, M.A.   +4 more
core  

Validating performance of automotive materials at high strain rate for improved crash design [PDF]

open access: yes, 2006
This paper investigates sources of performance variability in high velocity testing of automotive crash structures. Sources of variability, or so called noise factors, present in a testing environment, arise from uncertainty in structural properties ...
Bardenheier, R.   +6 more
core  

Comprehensive Numerical Modeling of Prestressed Girder Bridges under Low-Velocity Impact

open access: yesBuildings
Accidental collisions involving over-height trucks that exceed vertical clearance limits and bridge superstructures frequently happen, resulting in compromised girders and potential threats to structural safety and performance.
Mohamed T. Elshazli   +3 more
doaj   +1 more source

Bio-inspired programmable matter for space applications [PDF]

open access: yes, 2012
Nowadays, space structures are often designed to serve only a single objective during their mission life, examples are solar sails for propulsion, antennas for communication or shields for protection.
Sinn, Thomas, Vasile, Massimiliano
core  

Experimental and Numerical Study of Ballistic Impact Performance on Steel Plate Structures

open access: yesJournal of Engineering and Sustainable Development
High-strength steel plates are commonly employed in civil and military vehicles to provide ballistic protection against various threat levels. In this work, experimental tests involved shooting a 2 mm steel target (150×150 mm) with a Parabellum 9 × 19 ...
Muhanad Hamed Mosa Alawsi   +2 more
doaj   +1 more source

Numerical modelling of hailstone impact on the leading edge of a wind turbine blade [PDF]

open access: yes, 2013
The scale of modern blades means that tip speeds in excess of 100ms-1 are now common in utility scale turbines. Coupling this with a hailstone terminal velocity ranging from 9ms-1 to 40ms-1, the relative impact velocity becomes highly significant.
Keegan, Mark Hugh   +2 more
core  

A Modeling Technique and Representation of Failure in the Analysis of Triaxial Braided Carbon Fiber Composites [PDF]

open access: yes
Quasi-static tests have been performed on triaxially braided carbon fiber composite materials with large unit cell sizes. The effects of different fibers and matrix materials on the failure mode were investigated.
Binienda, Wieslaw K.   +3 more
core   +2 more sources

Evaluation of LS-DYNA MAT162 for Modeling Composite Fastener Joints for High Rates of Loading [PDF]

open access: yes
In the present work, the behavior of composite-fastener joints in bearing failure at dynamic stroke rates of 500 in/s, 300 in/s and 100 in/s has been evaluated through progressive damage analysis (PDA) material model in LS-DYNA, namely MAT162.
Bhasin, A.   +8 more
core   +1 more source

Numerical simulation of projectiles with different structures penetrating multi-storey concrete target board

open access: yesJournal of Measurement Science and Instrumentation, 2014
Because the difference between the acceleration curve of traditional projectile structure and the measured acceleration curve is large,refining projectile structure is proposed.
JIN Shu-yun   +2 more
doaj  

A Computational Approach for Probabilistic Analysis of Water Impact Simulations [PDF]

open access: yes
NASA's development of new concepts for the Crew Exploration Vehicle Orion presents many similar challenges to those worked in the sixties during the Apollo program. However, with improved modeling capabilities, new challenges arise.
Horta, Lucas G.   +2 more
core   +1 more source

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