Ali Choopanian Benis

Bio: Ali Choopanian Benis is an academic researcher from Malek-Ashtar University of Technology. The author has contributed to research in topics: Tube (fluid conveyance). The author has an hindex of 1, co-authored 1 publications receiving 6 citations.

A numerical study on energy absorption capability of lateral corrugated composite tube under axial crushing

Abstract: In this study, a comprehensive numerical investigation is carried out to evaluate the crashworthy behavior and the energy absorbing capacity of lateral corrugated composite tubes under axial loadin...

Axial crush simulation of composites using continuum damage mechanics: FE software and material model independent considerations

Abstract: The finite element (FE) simulation of industrial size composite structures under crush loading is a challenging task. Currently, the vast majority of these simulations employ non-physical “tweaking” parameters that are undesirable and limit the confidence in their predictive capabilities. This paper investigates three different material models based on continuum damage mechanics (CDM) within two commercial FE software packages, ABAQUS/EXPLICIT and LS-DYNA, to identify FE-code and material model-independent capabilities, limitations and challenges of physically-based axial crush simulation of composite structures without the use of non-physical parameters for model calibration. In particular, we show that the commonly applied crack band scaling in CDM-based material models is not suitable for the simulation of axial crushing where the dominant mode of failure is fragmentation.

Low-velocity impact of clamped slender rectangular sandwich tubes with metal foam core

Abstract: The main purpose of this work is to investigate the yield criterion and dynamic response of fully clamped slender rectangular sandwich tubes with metal foam core struck by a low-velocity heavy mass...

Impact Resistance Analysis and Optimization of Variant Truss Beam Structure Based on Material Properties.

Abstract: In order to meet the increasing application requirements with regards to structural impact resistance in industries such as mining, construction, aerospace engineering, and disaster relief and mitigation, this paper designs a variant truss beam structure with a large shrinkage ratio and high impact resistance. Based on the principle of the curved trajectory of scissor mechanisms, this paper conducts a finite element simulation analysis of the impact load on the truss beam structure, a theoretical analysis of the impact response and a relevant prototype bench-top experiment, completing a full study on the impact resistance mechanism of the designed variant truss beam structure under the impact load. In the paper, the buffer effect of the external load impact on the variant truss beam structure is analyzed from the perspective of the energy change of elastic–plastic deformation. This paper proposes an optimization strategy for the variant truss beam structure with the energy absorption rate as the optimization index through extensive analysis of the parameter response surfaces. The strategy integrates analyses on the response characteristic analysis of various configuration materials to obtain an optimal combination of component parameters that ensures that the strength of the truss beam structure meets set requirements. The strategy provides a feasible method with which to verify the effectiveness and impact resistance of a variant truss structure design.

Crashworthiness Analysis of Square Aluminum Tubes Subjected to Oblique Impact: Experimental and Numerical Study on the Initial Contact Effect

Abstract: This study investigates the crashworthiness behavior of square aluminum thin-walled tubes subjected to both axial and oblique impact loading, emphasizing the effects of crushing angle and initial contact between impactor and tube on the plastic collapse initiation and energy absorption capacity. A parametric study in crushing angle is conducted until 15°, while the two examined types of initial contact between impactor and tube consist of a contact-in-edge case and a contact-in-corner one, aiming to capture the effect of initial contact on both plastic collapse and energy absorption. Both experimental quasi-static tests and numerical simulation via finite element modeling in LS-DYNA software are carried out for the evaluation of the crushing response of the tested tubes. The 5° oblique cornered crushing revealed the greatest energy absorption, reflecting the most efficient loading case as significant tearing failure occurred around the tube corners in axial crushing due to a higher peak crushing force, while the increase in crushing angle caused a drop in energy absorption and peak force regarding the oblique loading. Finally, an initial contact-in-corner case revealed higher energy absorption compared to both axial and edged oblique loading, while peak force showed a slight decrease with crushing angle in that case.