Abstract
Abstract The purpose of this study is to analyze numerically the effect of explosions on orthotropic slabs which have partial fixity placement and stiffeners in the x direction, namely in the short span direction. The modified blast load dynamic behavior is from Reed’s equation with 4th order polynomial on orthotropic plates with x-direction stiffener. The localized blast load centered in the middle of the strain, and the effects of thickness and stiffening on the vertical deflection of the plates are solved numerically using two auxiliary equations in the x and y-directions. It is found that there is vertical deflection with related to time.
Highlights
1.1 BackgroundThe floor slab system chosen for building is different, depending on the function of the space and economic limitations and architectural requirements
The modified blast load dynamic behavior is from Reed's equation with 4th order polynomial on orthotropic plates with x-direction stiffener
The reinforced concrete slab system in the SNI 2847: 2019 regulation are classified into two types, namely one way slab and two way slab [1]
Summary
The floor slab system chosen for building is different, depending on the function of the space and economic limitations and architectural requirements. The Reed's equation in 1977 states that the Friedlander's equation in 1946 uses blast load equation approach as follow: (1). After the blast load passes through its positive phase, the load behavior changes to a negative pressure load (suction) [7] This phase generally has a maximum amplitude less than the positive phase, but longer duration, roughly twice the duration of the positive phase. After going through these two phases, the explosion has an advanced phase, namely the free vibration phase, or the no-load phase. It is necessary to study the connection between Reed and modified Reed equation, to determine the percent error approach to the Friedlander equation
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