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Structural Analysis

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A Novel Technique to Measure Tensile Properties of Plastics at High Strain Rates

by DatapointLabs6,761 views

High strain-rate properties have many applications in the simulation of automotive crash and product drop testing. These properties are difficult to measure. These difficulties result from inaccuracies in extensometry at high strain rates due to extensometer slippage and background noise due to the sudden increase in stress at the start of the test. To eliminate these inaccuracies we use an inferential technique that correlates strain to extension at low strain rates and show that this can be extended to measure strain at higher strain rates

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ANSYSAbaqusAerospace and DefenseAutomotiveConsumer ProductsHigh Speed TestingHome AppliancesLS-DYNAMSC.DYTRANMaterial SupplierMechanicalNonlinear Material ModelsPAM-CRASHPackagingPlasticsRate DependencyResearch PapersStructural AnalysisToys/Sporting Goods

Handbook of Plastics Analysis: Book Review

by DatapointLabs5,785 views

Assurance of quality in raw materials, control over production, and a basic understanding of criteria for performance all require a sure and complete knowledge of analytical methods for plastics. The present volume organizes the vast world of plastics analysis into a relatively compact form. A plastics engineer will find familiar territory in such subjects as rheometry, differential scanning calorimetry, and measurement of thermal properties. Polymer physicists and chemists will be at home with spectroscopic analyses, liquid chromatography, and nuclear magnetic resonance. All these topics and many more are covered in twelve chapters written by an impressive array of experts drawn from industry and academia.

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Book ReviewPlasticsRheologyStructural AnalysisThermal

Practical Issues in the Development and Implementation of Hyperelastic Models

by DatapointLabs6,063 views

Hyperelastic models are used extensively in the finite element analysis of rubber and elastomers. These models need to be able to describe elastomeric behavior at large deformations and under different modes of deformation. In order to accomplish this daunting task, material models have been presented that can mathematically describe this behavior [1]. There are several in common use today, notably, the Mooney-Rivlin, Ogden and Arruda Boyce. Each of these has advantages that we will discuss in this article. Further, we will examine the applicability of a particular material model for a given modeling situation.

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ANSYSAbaqusAerospace and DefenseAutomotiveBiomedicalFoamsMSC.MARCNX NastranNonlinear Material ModelsResearch PapersRubbersSOLIDWORKSStructural Analysis

High Speed Stress Strain Material Properties as Inputs for the Simulation of Impact Situations

by DatapointLabs6,392 views

With the recent changes in the crashworthiness requirements for US automobiles for improved safety, design engineers are being challenged to design interior trim systems comprised of polymeric materials to meet these new impact requirements. Impact analysis programs are being used increasingly by designers to gain an insight into the final part performance during the design stage. Material models play a crucial role in these design simulations by representing the response of the material to an applied stimulus. In this work, we seek to develop novel test methods to generate high speed stress-strain properties of plastics, which can be used as input to structural analysis programs...

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ANSYSAbaqusAerospace and DefenseHigh Speed TestingHome AppliancesLS-DYNAMSC.DYTRANMaterial SupplierMetalsNonlinear Material ModelsPAM-CRASHPackagingPlasticsResearch PapersStructural AnalysisThermoformingToys/Sporting Goods

Mechanical Properties of Polymers and Composites, 2nd Edition: Book Review

by DatapointLabs5,501 views

This book presents a valuable resource for engineers and designers seeking to apply structural analysis and other advanced methods to the design of plastic parts. The reader learns what to expect for the mechanical properties of polymers and develops a grasp of how plastics respond to various applied stress conditions. The book introduces mechanical tests and polymer transitions, moving onward into chapters on elastic behavior, creep and stress relaxation, dynamic mechanical properties, stress- strain behavior and strength, It also covers abrasion, fatigue, friction and stress cracking. Additionally, the effects of fillers and fibers on these properties are considered.

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Book ReviewCompositesMechanicalPlasticsStructural Analysis

Structural Analysis of Thermoplastic Components: Book Review

by DatapointLabs6,092 views

The primary purpose of this book is to describe the application of modern engineering analysis techniques to the design of components fabricated from thermoplastic materials. The book, the first of its kind to address the unique behavioral characteristics of thermoplastics and their impact on finite element analysis (FEA), points out the need for plastics designers to move on to nonlinear analysis in order to truly simulate the behavior of plastic parts. According to the authors, the easy availability of high speed computing and efficient analysis codes means that it is no longer necessary nor cost-effective to restrict oneself to simple linear analyses.

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Book ReviewNonlinear Material ModelsPlasticsStructural AnalysisThermoforming