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Design Of Concrete-Filled Circular Steel Tubes Under Lateral Impact, Yaohua Deng, Christopher Tuan
Design Of Concrete-Filled Circular Steel Tubes Under Lateral Impact, Yaohua Deng, Christopher Tuan
Christopher Y. Tuan
Infrastructures and key members are potentially exposed to accidental loads due to extreme situations such as collisions, impacts, and terrorist bombings. Consequently, the current design concept requires that the structures or key members possess adequate capacities to resist accidental loads. To understand the mechanical response of concrete-filled steel tube (CFT) beams subjected to impact loads, this paper presents numerical simulations on the CFT beam tests in an instrumented drop-weight impact facility using finite element code LS-DYNA. The adequacy of finite element modeling (FEM) has been validated against drop-hammer impact tests in the literature. Based on the dynamic increase factors (DIFs) …
Numerical Analysis Of A Novel Thermoplastic Sandwich Core Material, Christopher Tuan, Robert Sierakowski
Numerical Analysis Of A Novel Thermoplastic Sandwich Core Material, Christopher Tuan, Robert Sierakowski
Christopher Y. Tuan
A numerical investigation of the behavior of a novel thermoplastic honeycomb core material was conducted. This sandwich core material, known as Norcore®, consists of interconnected cells in a unique configuration of truncated pyramid with sloping cell walls. A finite element model of the unit cell structure was constructed using shell elements. Mechanical properties of polycarbonate core specimens of 25.4 mm and 50.8 mm thickness without facings reported by the manufacturer were used for comparisons with finite element analysis.