Mechanical Engineering ETDs

Publication Date

Summer 6-2-2017

Abstract

The research documented in this thesis deals with computational analysis of reinforced concrete impacted by both hollow and solid missiles as a continuing effort on the work conducted by the Committee on the Safety of Nuclear Installations (CSNI) and Nuclear Energy Agency (NEA). The analysis focuses on comparing two similar material models and their ability to capture the mechanistic response of a reinforced concrete slab subjected to impact loads. The analysis was performed using the Sandia National Laboratories computing software SIERRA Solid Mechanics to run the finite element model. The two constitutive models studied were the Holmquist-Johnson-Cook and Johnson-Holmquist 2 material models. The two material models were run with identical meshes, element types, and boundary conditions and their results were compared to the experimental test data gathered by the CSNI. Both material models proved to be successful in capturing the global flexural response of the reinforced concrete target impacted. However, the fractured damage pattern produced by both material models in the two simulations (hollow/solid) proved that some degree of uncertainty was present in the modeling approach and the material model itself.

Keywords

Concrete impact, Reinforced concrete simulations, HJC, JH2, FEA

Degree Name

Mechanical Engineering

Level of Degree

Masters

Department Name

Mechanical Engineering

First Committee Member (Chair)

Dr. Tariq Khraishi

Second Committee Member

Dr. Scott E. Sanborn

Third Committee Member

Dr. Yu-lin Shen

Document Type

Thesis

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