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Interaction of Kinetic Energy Penetrators With Geomaterials and Concrete
A large diameter split Hopkinson pressure bar (SHPB) was used to generate dynamic shear strength and confined/unconfined compressive data for mortar. In addition quasistatic shear and compressive strength data were generated for the same mortar. The new shear specimen was modeled using finite element analysis to verify its validity. Strain rate sensitivity of the shear response of mortar is very similar to that of the tension and compression data. A new elastic/viscoplastic constitutive equation was developed for mortar. This equation, rather simple in concept and expression, captures the main features of the material response such as compressibility and dilatancy strain-hardening, influence of the loading rate and creep and relaxation. This model can be easily extended to 3-D conditions.
Interaction of Kinetic Energy Penetrators With Geomaterials and Concrete
A large diameter split Hopkinson pressure bar (SHPB) was used to generate dynamic shear strength and confined/unconfined compressive data for mortar. In addition quasistatic shear and compressive strength data were generated for the same mortar. The new shear specimen was modeled using finite element analysis to verify its validity. Strain rate sensitivity of the shear response of mortar is very similar to that of the tension and compression data. A new elastic/viscoplastic constitutive equation was developed for mortar. This equation, rather simple in concept and expression, captures the main features of the material response such as compressibility and dilatancy strain-hardening, influence of the loading rate and creep and relaxation. This model can be easily extended to 3-D conditions.
Interaction of Kinetic Energy Penetrators With Geomaterials and Concrete
C. A. Ross (author) / M. J. Schmidt (author) / N. D. Cristescu (author) / O. Cazacu (author)
1999
72 pages
Report
No indication
English
Ammunition, Explosives, & Pyrotechnics , Structural Mechanics , Viscoplasticity , Elastic properties , Penetration , Kinetic energy projectiles , Shear strength , Shear properties , Dynamics , Finite element analysis , Strain rate , Equations , Compressive strength , Compressive properties , Geomaterials , Shpb(Split hopkinson pressure bar)
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