Material Properties Archives - ESRD https://www.esrd.com/product-tag/material-properties/ Engineering Software Research and Development, Inc. Mon, 11 Sep 2023 13:05:58 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.2 https://www.esrd.com/wp-content/uploads/cropped-SC_mark_LG72ppi-32x32.jpg Material Properties Archives - ESRD https://www.esrd.com/product-tag/material-properties/ 32 32 StressCheck Demo: Thermo-Mechanical Analysis with Temperature-Dependent Material Properties https://www.esrd.com/resource-library/product/stresscheck-demo-thermo-mechanical-analysis-with-temperature-dependent-material-properties/ Wed, 18 Jan 2023 19:10:09 +0000 https://www.esrd.com/?post_type=product&p=27037 Abstract: A thermo-mechanical (Heat Transfer -> Elasticity) analysis is performed for a Handbook model of two Inconel 718 connected pipes connected by a thin fin (\Handbook\Tutorial\ConnectedPipes.scw). The parametric Handbook model contains formula-based, temperature-dependent coefficients of thermal conductivity (when the theory is Heat Transfer) as well as formula-based, temperature-dependent linear isotropic material properties (when the theory is Elasticity). The goals of the thermo-mechanical analysis are to:
  • Compute the linear (coefficient of thermal conductivity for a reference temperature T=200 °F) and material nonlinear (coefficient of thermal conductivity is allowed to be temperature-dependent) temperature distributions via steady-state conduction heat transfer
  • Apply the temperature distribution computed from the material nonlinear solution as a thermal load for all elements using a reference temperature of 0 °F
  • Solve a linear elastic solution using the thermal load, symmetry/rigid body constraints, and temperature-dependent linear isotropic properties
  • Extract the local stresses at the intersection of the fin and the pipes.
  For the steady-state conduction heat transfer analysis, the following boundary conditions are assigned:
  • Cooling of the external pipe surfaces is by convection via parameters "Hc" (convective film coefficient) and  "Tc"(convective temperature).
  • The left pipe inside temperature is given by parameter "To", and the right pipe inside temperature is given by parameter "Tp".
  For the linear elastic analysis, the following boundary conditions are assigned:
  • Thermal loading of the connecting pipes + fin is defined by importing the temperatures from the material nonlinear steady state conduction heat transfer solution.
  • Double-symmetry conditions are used to model 1/4 of the connecting pipes + fin.
  • A nodal constraint in the global X direction restricts rigid body translation.
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]]> ASIP 2022 Training – Best Practices for the Modeling and Analysis of Bonded Doubler Repairs https://www.esrd.com/resource-library/product/asip-2022-training-best-practices-for-the-modeling-and-analysis-of-bonded-doubler-repairs/ Mon, 05 Dec 2022 15:01:02 +0000 https://www.esrd.com/?post_type=product&p=26512 Abstract: this 2-hour training course, originally presented at the ASIP 2022 conference in Phoenix, AZ, explored the following topics:
  • StressCheck’s FEA technology implementation enabling modeling of very thin domains, including adhesive layers with 3D-solid elements.
  • Best practices and guidelines for modeling and analyzing 3D bonded repair doubler variations (e.g. racetrack/rectangular, circular/elliptical, tapered, metallic, ply-by-ply, homogenized, etc.) for circular cutouts and grindouts.
  • Performing “what if?” logic-driven studies of a digital 3D bonded repair handbook solution via StressCheck API-powered Engineering Simulation App, in which user-defined input data is passed from Python or Excel VBA to StressCheck Professional to perform scripted “on-the-fly” model adjustments and repair-oriented computations.
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]]> Application Brief: Detailed Analysis of Bonded Repairs https://www.esrd.com/resource-library/product/application-brief-detailed-analysis-of-bonded-repairs/ Tue, 22 Nov 2022 14:48:26 +0000 https://www.esrd.com/?post_type=product&p=26453 Aircraft are commonly being flown well past their original expected service life, and the value derived from improving the productivity and reliability of DaDT analysis functions to support the inspection, maintenance, repair, and life-extension of today’s aerostructures is substantial. StressCheck's implementation of numerical simulation is designed to support solution verification, an essential technical requirement of Simulation Governance. The implementation makes it possible to encapsulate complexity, improve productivity, contain costs, and ensure the reliability of results for the expert simulation analyst as well as the non-FEA expert DaDT engineer.]]>
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]]> StressCheck Tutorial: Parametric TLAP Scaling for Nonlinear Events https://www.esrd.com/resource-library/product/stresscheck-tutorial-parametric-tlap-scaling-for-nonlinear-events/ Tue, 18 Oct 2022 15:46:42 +0000 https://www.esrd.com/?post_type=product&p=26253 Abstract: demonstration of limit load analysis through parameter-based TLAP load scaling and incremental theory of plasticity (ITP). The parametric TLAP scaling option for ITP Nonlinear Events is available as of StressCheck v11.1. For more details, refer to Total Load at a Point (TLAP) Implementation and Nonlinear Events Overview.]]>
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]]> StressCheck Tutorial: Incorporating CX Residual Stresses in SIF and J-integral Extractions https://www.esrd.com/resource-library/product/stresscheck-tutorial-incorporating-cx-residual-stresses-in-sif-and-j-integral-extractions/ Thu, 14 Jul 2022 01:21:28 +0000 https://www.esrd.com/?post_type=product&p=25522 Abstract: incorporating coldworked (CX) residual stresses in the computation of fracture mechanics parameters (SIF/J-integral). The following workflow is outlined:
  1. Open existing 3D-Fracture Handbook model (CrackOpenHole-ResidualStresses.scw)
  2. Add parameters, convert material to elastic-plastic, and modify the model boundary conditions for a cold-work simulation
  3. Solve a linear solution, and then solve the cold-work simulation events via incremental plasticity
  4. Use BRS mapping to map the cold-work solution to a new part
  5. Assign BRS load and remote traction, convert material to linear-elastic, and modify constraints to represent the crack face
  6. Solve a linear analysis and extract SIF's/J-integrals
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]]> StressCheck Tutorial: I-Section with Racetrack Cutout Stress Analysis Part 2 – Formula Inputs https://www.esrd.com/resource-library/product/stresscheck-tutorial-i-section-with-racetrack-cutout-stress-analysis-part-2-formula-inputs/ Fri, 11 Feb 2022 22:44:40 +0000 https://www.esrd.com/?post_type=product&p=24083 Abstract: In part 2 of this two-part tutorial series, we will load the boundary layer-meshed model from part 1, define and assign conditional formula expressions for the elastic modulus and applied stress, re-solve, and plot the updated results.]]>
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]]> Helpful Hints and Tips: Advanced StressCheck Automation – Model Setup & Analysis (Python) https://www.esrd.com/resource-library/product/helpful-hints-and-tips-advanced-stresscheck-automation-model-setup-analysis-python/ Mon, 30 Aug 2021 19:03:02 +0000 https://www.esrd.com/?post_type=product&p=22348 Abstract: Python script and output files associated with the exercise found in Advanced StressCheck Automation: Model Setup & Analysis.]]>
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]]> Helpful Hints and Tips: Advanced StressCheck Automation – Model Setup & Analysis (Excel VBA) https://www.esrd.com/resource-library/product/helpful-hints-and-tips-advanced-stresscheck-automation-model-setup-analysis-excel-vba/ Mon, 30 Aug 2021 18:42:08 +0000 https://www.esrd.com/?post_type=product&p=22343 Abstract: Excel VBA script and output files associated with the exercise found in Advanced StressCheck Automation: Model Setup & Analysis.]]>
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]]> Getting Started with StressCheck: e-Learning Video Showcase https://www.esrd.com/resource-library/product/getting-started-with-stresscheck-e-learning-video-showcase/ Tue, 16 Feb 2021 14:39:52 +0000 https://esrd.com/?post_type=product&p=19589 This tailored e-Learning video collection provides an introduction to the technology and usage of StressCheck Professional, with selected presentations, tutorials, demos and practical applications. [video_embed url="https://vimeo.com/401205205/0d3c097b99" embed_style="default"] The video collection contains 22 videos for a total of approximately four (4) hours of e-Learning material. Hovering over a video thumbnail will reveal its intended viewing order and topic, and clicking on a video thumbnail will load its video in the space below. Note: all on-demand videos are also available for streaming on the ESRD Resource Library in the Demo Video and Tutorial Video categories.]]>
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]]> Numerical Simulation Series: Deformation Theory of Plasticity (DPT) https://www.esrd.com/resource-library/product/numerical-simulation-series-deformation-theory-of-plasticity-dpt/ Mon, 26 Oct 2020 21:08:51 +0000 https://esrd.com/?post_type=product&p=17570 Abstract: In this edition of ESRD's Numerical Simulation Series, the numerical simulation of small-strain elastic-plastic stress analysis problems based on the deformation theory of plasticity (DTP) is examined in detail. Highlights include:
  • Formulation of the mathematical model of deformation theory of plasticity (DTP)
  • Outline of the deformation theory of plasticity (DTP) solution algorithm
  • Ultimate loading considerations
  • Nonlinear springs
  • Model problems.
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