Mechanical Reduction of Inertially Generated Effects in Single-Edge Notched Bend (SENB) Specimens Subjected to Impact Loading

2009 ◽  
pp. 76-76-16 ◽  
Author(s):  
KJ KarisAllen ◽  
J Morrison
Keyword(s):  
Impact Loading ◽  
Single Edge

Inelastic Response of a Deep Crack Single-Edge Notch Specimen Under Impact Loading

1995 ◽  
Vol 117 (3) ◽  
pp. 205-211
Author(s):  
P. M. Vargas ◽  
R. H. Dodds
Keyword(s):  
Strain Rate ◽  
Impact Loading ◽  
Time Integration ◽  
Model Material ◽  
Integration Scheme ◽  
Pressure Vessel Steel ◽  
Single Edge ◽  
Strain Rate Effects ◽  
Vessel Steel ◽  
Dynamic Analyses

Three-dimensional dynamic analyses are performed for a single-edge bend, SE(B), fracture specimen (a/W = 0.5) subjected to impact loading. Loading rates obtained in routine drop tower tests (terminal load-line velocity of 100 in./s or 2.54 m/s) are applied in the analyses. Explicit time integration coupled with an efficient element integration scheme is used to compute the dynamic response of the specimen. Strainrate sensitivity is introduced via a new, efficient implementation of the Bodner-Partom viscoplastic constitutive model. Material properties for A533B steel (a medium strength pressure vessel steel) are used in the analyses. Static analyses of the same SE(B) specimens provide baseline results from which inertial effects are assessed. Similarly, dynamic analyses using a strain-rate insensitive material provide a reference for the assessment of strain rate effects. Strains at key locations and the support reactions are extracted from the analyses to assess the accuracy of static formulas commonly used to estimate applied J values. In ertial effects on the applied J are quantified by examining the acceleration component of J. Results show that dynamic effects for the steel analyzed are negligible after twice a characteristic time that can be defined in terms of the first elastic period of the specimen.

GRAPH-AL

Alloy Digest ◽  
1958 ◽  
Vol 7 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Impact Loading ◽  
Roller Bearing ◽  
Heat Treating ◽  
Graphitic Steel

Abstract GRAPH-AL is a water or brine hardening graphitic steel used in applications which require shallow hardening properties and resistance to impact loading. This datasheet provides information on composition and hardness as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: TS-68. Producer or source: Timken Roller Bearing Company.

Mathematical modeling of elastoplastic deformation of tubular energy-absorbing elements under static and impact loading

2020 ◽  
pp. 78-82
Author(s):  
A.Р. Evdokimov ◽  
A.N. Gromyiko ◽  
A.A. Mironov
Keyword(s):  
Mathematical Modeling ◽  
Impact Loading ◽  
Elastoplastic Deformation ◽  
Shock Absorber ◽  
Analytical Models ◽  
Dynamic Impact ◽  
Shock Absorbers ◽  
Energy Absorbing ◽  
Absorbing Elements

Analytical models of static and dynamic impact elastoplastic deformation of tubular energy-absorbing elements constituting a tubular plastic shock absorber are proposed. The developed models can be used for the calculation and design of these shock absorbers. Keywords static and dynamic elastoplastic deformation, mathematical modeling, tubular energy-absorbing element, tubular plastic shock absorber, impact loading. [email protected]

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