StressCheck by ESRD

Engineering Software Research and Development, Inc. (ESRD) creates and markets software tools for the advancement of simulation governance in mechanical, aerospace and structural engineering. Motivated by economic incentives, OEMs strive to reduce reliance on physical testing and increase reliance on numerical simulation. To achieve that goal, it is necessary to institute simulation governance which poses new technical requirements. ESRD's flagship product StressCheck is the only FEA product in existence today that was designed to meet the technical requirements of simulation governance. ESRD is a Missouri Corporation founded in 1989.

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Enabled Solution: StressCheck
Category: Structural Analysis

What is StressCheck?

StressCheck is a comprehensive finite element analysis software tool with a pre and post-processor and a suite of analysis modules that support advanced solution methods in linear elasticity, multi-body contact, geometric and material nonlinearities, modal and buckling analysis, fracture mechanics, laminate composite analysis, and steady state heat transfer, including temperature-dependent material properties and radiation.

StressCheck has utility modules that offer functionality to import NASTRAN bulk data format, to import CAD models and to perform 2D and 3D automatic meshing. StressCheck provides industry-leading post processing options which include error estimators for the assessment of the quality of approximation: Global error estimation in energy norm and local error estimators for any data of engineering interest. StressCheck is based on the p-version finite element method. Because the p-version is a more comprehensive implementation of the finite element method than the h-version, StressCheck can be operated in the “h-mode”.

Key Features & Benefits

The robust element formulation in StressCheck allows for elements with very large aspect ratios (200:1 or larger) which is essential for the ply-by-ply modeling of laminate composites and bonded composite joints. High-order mapping makes it possible for the elements to accurately represent the shape of the part which is extremely valuable for accurate stress analysis of single parts and for multi-body contact situations such as multi-fastened joints. Several methods of importing loads/displacements from global models are available for global-local stress analysis. A robust and flexible post-processing allows analysts to extract any data from the FE solution and assess the convergence of the results.

Additionally, StressCheck provides a Handbook framework for deployment of standard solutions with confirmation of reliability. Users can create a library of parametric models to serve as repository for standardization and corporate design knowledge. FE-based handbook solutions eliminate the need of overly simplified assumptions typical of closed-form solutions found in classical handbooks, and can be customized to accurately describe real world problems. Highly reliable and efficient procedures for the extraction of fracture mechanics parameters is available in StressCheck: Stress intensity factors for through and corner cracks in isotropic materials and energy release rate components for crack and delamination in composite materials.

Applications

Industrial applications are targeted at aerospace engineers with key focus on fatigue and fracture, crack growth, damage tolerance assessment, fastened and bonded joints and laminated composite analysis. StressCheck is ideally suited to support processes which are variously called “building block method”, “validation pyramid” and “validation hierarchy”.

Modules

Modules Available
  • StressCheck Basic: StressCheck Basic module provides a fully integrated graphical user interface (GUI) and features a complete pre- and post-processor built around a parametric handbook framework that supports standardization of design and analysis processes. Parameterized models of complex parts and details can be developed by qualified analysts and delivered in a very convenient and reliable handbook environment for use by persons who do not have expertise in FEA. StressCheck Handbook serves as a repository for standardization and corporate design knowledge. The post-processor has the flexibility for extracting engineering data from any solution and assessing convergence of any computed quantity anywhere in the model. The StressCheck Basic module supports all other modules.
  • Linear Elasticity Analysis
  • Linear Heat Transfer Analysis
  • Nonlinear Analysis
  • Modal/Buckling Analysis: View product brief
  • Cold Working Analysis: View product brief
  • Margin Check Analysis
  • Fracture Mechanics Analysis: View product brief
  • StressCheck Composites: View product brief
Modules not currently available through the APA
  • Batch processing in Windows 64 bit version

Specifications

StressCheck is available on 32-bit or 64-bit Windows XP (SP2 or later) and Windows 7 operating system as a 32-bit application. Other Windows operating systems may operate satisfactorily, but those operating systems are not explicitly supported. Floating licenses require Window XP, Windows 7 or Windows Server 2003 as the license server operating system to run FLEXnet License Server.