Computational Simulation for Static and Dynamic Load of Rectangular Plate in Elastic Region for Analysis of Impact Resilient Structure

Abstract

Impact resilient structures are of great interest in many engineering applications varying from civil, land vehicle, aircraft and space structures, to mention a few examples. To design such structure, one has to resort fundamental principles and take into account progress in analytical and computational approaches as well as in material science and technology. With such perspective, the first objective of this work is to develop a computational algorithm to analyze flat plate as a generic structure subjected to impact loading for numerical simulation and parametric study without considering the surface impact effect. The analysis is carried out from first principles for static and dynamic analysis; the latter is based on dynamic response analysis in the elastic region. The second objective is to utilize the computational algorithm for direct numerical simulation, and as a parallel scheme, commercial off-the shelf numerical code is utilized for parametric study, optimization and synthesis. Through such analysis and numerical simulation, effort is devoted to arrive at optimum configuration in terms of loading, structural dimensions, and material properties, among others. The codes developed are validated for generic cases. Further simulations are carried out using commercial codes for some sample applications to explore impact resilient structural characteristics in the elastic region.

Vibration Analysis of a Cantilevered Beam with Spring Loading at the Tip as a Generic Elastic Structure

“…Following a series of previous investigation on the analysis of impact resilient structure [1][2][3][4], the objective of this work is to carry out vibration analysis of an elastic clamped cantilever beam structures with a spring attached at the end, as depicted in Fig. 1.…”

“…Studies of vibrating beams and plates have a wide variety of applications in mechanical engineering, aeronautical and civil structures [1][2][3][4][5][6]. For instructiveness, structures might be analyzed starting from simplified configurations.…”

Finite Element Computational Modeling and Simulation Studies of Non-Penetrating Impact Using Fundamental Principles

“…To this end, research problem conceived can be formulated as the loading and response characteristics of a set of rectangular isotropic and homogeneous but different material properties plates, bonded together and placed under the impact of a solid and rigid spherical impactor. In particular, as an example, the meteorite Figure 1: Baseline model of a plate and spherical impactor used for impact analysis [3] impact on spacecraft structure can be idealized by considering the generic case of a plate structure modeled as Mindlin plate [1] subject to impact loading. The first objective of the work is to develop a computational algorithm to analyze flat plate as a generic structure that is subjected to impact loading for numerical simulation and parametric study.…”

“…The present study is a part of a series of work to search for the optimum structural design for non-penetrating impact. Following the methodological approach in [2][3], the present study is focused on numerical finite element simulation of impact of a rigid sphere on an elastic panel. A simplification is made in the analysis and numerical simulation of impact on panel structure by excluding the surface impact effect, which could be superposed to the surface impact problem discussed separately [4].…”

“…A simplification is made in the analysis and numerical simulation of impact on panel structure by excluding the surface impact effect, which could be superposed to the surface impact problem discussed separately [4]. In view of the analysis carried out in [4][5][6][7], the problem will be simulated numerically using finite element codes ABAQUS™, ANSYS TM or AUTODYNE TM as appropriate. Deformation and stress distribution on the impacted structure due to impact loading will be determined for structural integrity and dynamic stability purposes.…”