Fastened Joints Archives - ESRD https://www.esrd.com/product-tag/fastened-joints/ Engineering Software Research and Development, Inc. Thu, 12 Sep 2024 15:14:46 +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 Fastened Joints Archives - ESRD https://www.esrd.com/product-tag/fastened-joints/ 32 32 StressCheck Tutorial: New Assembly Meshing/Auto Contact Features in StressCheck v12.0 https://www.esrd.com/resource-library/product/stresscheck-tutorial-new-assembly-meshing-auto-contact-features-in-stresscheck-v12-0/ Wed, 11 Sep 2024 20:11:43 +0000 https://www.esrd.com/?post_type=product&p=32645 A new and powerful assembly automeshing/automatic contact detection feature is now available with the release of StressCheck v12.0. Before automeshing an assembly of close-contacting solid bodies, users may enable the "Assembly Meshing" option to enforce element face matching between neighboring surfaces (to within a user-specified tolerance). Once the solid bodies have been automeshed, StressCheck will automatically create contact zones between matched neighboring element faces and assign contact pairs via the new Auto Contact constraint method to the current constraint ID (if existing, otherwise StressCheck will use "AUTO_CONT" as the constraint ID). Individual contact pairs generated via the Auto Contact method may specified as Contact (the default, traditional multi-body contact), Fused (if element face matching was 100% successful, matched element faces are bonded) or Free (matched element faces are free). Note that if individual contact pairs are specified as Contact, and a parameter is not used for the Contact Constant, the Contact Constant value is computed from the assigned material property data and will be updated if one or more of the material properties are modified. This tutorial revisits a previous 3D multi-body contact example and utilizes assembly automeshing/automatic contact detection to significantly reduce the amount of setup time for multi-body contact analysis. The tutorial also demonstrates how refining the automesh (or updating a parameter value which triggers a re-mesh) will result in the re-generation of the contact zones/contact pairs.]]>
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]]> ASIP 2023 Training – Enhancements in StressCheck v12.0 for DaDT Analysis of 3D Fastened Connections https://www.esrd.com/resource-library/product/asip-2023-training-enhancements-in-stresscheck-v12-0-for-dadt-analysis-of-3d-fastened-connections/ Thu, 07 Dec 2023 15:55:57 +0000 https://www.esrd.com/?post_type=product&p=30457 Abstract: this 2-hour training course, originally presented at the ASIP 2023 conference in Denver, CO, explored the following topics:
  • StressCheck’s FEA technology implementation for the modeling, meshing and analysis of arbitrarily shaped 3D crack geometries, with and without the local effects of multi-body contact.
  • Strategies for automatic meshing of 3D cracks with high-aspect ratio, 3D-solid pentahedral and hexahedral elements to support high-quality SIF extractions at any location on the crack front.
  • New StressCheck 12.0 method to support multi-body contact assembly meshing, auto-detection of contact regions, and automatic assignment of contact pairs for 3D solid bodies.
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]]> StressCheck Demo: 2D Splice Joint Case Study https://www.esrd.com/resource-library/product/stresscheck-demo-2d-splice-joint-case-study/ Fri, 02 Jun 2023 16:15:21 +0000 https://www.esrd.com/?post_type=product&p=28320 Abstract: demonstration of how to quickly setup and analyze a 2D splice joint configuration using quads, tris, fasteners and links. Additionally, the influence of the link shear stiffness (Ks) on the splice joint stresses and fastener reactions will be assessed.]]>

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]]> StressCheck Tutorial: Improving Multi-Body Contact Efficiency and Quality via Hexa/Penta Boundary Layer Refinement https://www.esrd.com/resource-library/product/stresscheck-tutorial-improving-multi-body-contact-efficiency-and-quality-via-hexa-penta-boundary-layer-refinement/ Fri, 17 Mar 2023 15:41:01 +0000 https://www.esrd.com/?post_type=product&p=27468 Abstract: demonstration of how refining surfaces in contact with at least one hexa-dominant mesh layer (via the mixed Boundary Layer automesh method) improves the outcomes of multi-body contact solutions. The mixed Boundary Layer automesh method is available as of StressCheck v11.1. For more details, refer to MeshSim Automesh Generation Methods.]]>
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]]> Webinar: Benefits of Mixed Meshing for Multi-Body Contact Applications https://www.esrd.com/resource-library/product/webinar-benefits-of-mixed-meshing-for-multi-body-contact-applications/ Mon, 13 Mar 2023 20:42:18 +0000 https://www.esrd.com/?post_type=product&p=27441 [vc_row][vc_column width="1/2"][vc_message message_box_color="peacoc" icon_fontawesome="fa fa-lightbulb-o"]March 13, 2023 @ 1:00 pm EST[/vc_message][vc_column_text]Strategies for incorporating advanced mixed (hexa/penta) automeshing techniques for improved quality and efficiency of 3D multi-body contact applications will be explored.[/vc_column_text][vc_cta h2="" add_button="right" btn_title="WATCH NOW" btn_color="danger" btn_link="url:%23recording|||"]This webinar is now available to watch on-demand.[/vc_cta][/vc_column][vc_column width="1/2"] [caption id="attachment_27442" align="alignnone" width="1166"] 3D Splice Plate problem definition (top right), mixed mesh taking advantage of symmetry (top left) and plate von Mises stresses (bottom).[/caption] [/vc_column][/vc_row][vc_row][vc_column][vc_column_text]

WEBINAR SUMMARY

[/vc_column_text][vc_custom_heading text="In this 3-part, pre-recorded 40-minute webinar we will present how the automeshing enhancements now available in StressCheck v11.1 significantly aid in the rapid generation of penta- and hexa-dominant meshes for use in 3D multi-body contact applications. To realize these concepts in a practical setting, a 3D splice joint assembly will be constructed, analyzed and post-processed, with detailed commentary on each step in the workflow process." font_container="tag:p|text_align:left" use_theme_fonts="yes"][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]

WEBINAR HIGHLIGHTS

[/vc_column_text][vc_column_text]Part 1: Model Definition & Parametric Geometry Construction
  • Problem definition, scope and use of symmetry to reduce model size
  • Importation of a parameter file (.par)
  • Construction of 3D parametric solid bodies (boxes, cylinders, cones, etc.)
  • Boolean union/subtraction operations between 3D solid bodies to define 3D splice joint parts
  • Copy operations to duplicate child fastener bodies from a single parent fastener body
  • Body-to-body imprints between all parts for optimization of contacting surfaces
  Part 2: Part Definition, Contact Zone Setup, Mixed Mesh Generation, Material Properties & Boundary Conditions
  • Creation of Parts for efficient bookkeeping and visualization
  • Generation of the solid mixed meshes for each Part via Global, Boundary Layer and Thin Section automesh methods
  • Creation of contact zones for Part regions expected to be in contact
  • Definition and assignment of material properties to each Part
  • Assignment of boundary conditions (loads and constraints) to each Part
  • Assignment of contact pairs to allow gap and pressure computations between Part contact zones
  Part 3: Solution Setup, Execution and Post-Processing
  • Linear multi-body contact solution setup and initiating the solver
  • Evaluation of max contact pressure error, solve time and degrees of freedom solved (DOF)
  • Plotting the deformation of the 3D splice joint assembly
  • Plotting of von Mises stresses for each Part in the 3D splice joint assembly
  • Unaveraged vs. averaged von Mises stresses for each plate Part
  • Computing the stress resultants to ensure quality load transfer between Parts
  • Summary and wrap-up
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]]> StressCheck Tutorial: Incrementing a Thru-Crack in a Filled Hole via Excel VBA https://www.esrd.com/resource-library/product/stresscheck-tutorial-incrementing-a-thru-crack-in-a-filled-hole-via-excel-vba/ Tue, 26 Jul 2022 16:13:25 +0000 https://www.esrd.com/?post_type=product&p=25646 Abstract: designing and executing an Excel VBA-based Simulation App for the computation of thru-crack SIF's in the vicinity of a filled hole represented by a fastener element. The model used for the tutorial (CrackedLug.scw) is found in the 2D-Fracture Handbook, and the Excel macro can be downloaded from the link below the video.  ]]>
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]]> StressCheck Tutorial: Modeling a Cracked Plate in a 2D Fastened Connection https://www.esrd.com/resource-library/product/stresscheck-tutorial-modeling-a-cracked-plate-in-a-2d-fastened-connection/ Wed, 13 Jul 2022 20:05:20 +0000 https://www.esrd.com/?post_type=product&p=25515 Abstract: setting up a 2D fastened connection analysis (fasteners/links/planar elements) for two plates, with the upper plate having a parametric thru-crack at its middle hole. Solving linear and general nonlinear analyses to activate the fastener elements, followed by extracting SIF's at the crack tip.]]>
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]]> StressCheck Tutorial: Multi-Body Contact Solver Options/Plot Functions https://www.esrd.com/resource-library/product/stresscheck-tutorial-multi-body-contact-solver-options-plot-functions/ Fri, 22 Jan 2021 16:30:44 +0000 https://esrd.com/?post_type=product&p=19128 Abstract: with the release of StressCheck v11, solver settings for models with active contact zones (Iteration Limit, Pressure Tolerance, Ray Tolerance) and functions for plotting contact pressure, initial gap and final gap are now available to provide more control and feedback for multi-body contact analyses.]]>
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]]> CAE Handbook Demo: 3D Attachment Lug https://www.esrd.com/resource-library/product/cae-handbook-demo-3d-attachment-lug/ Tue, 19 Jan 2021 16:04:58 +0000 https://esrd.com/?post_type=product&p=19100 ESRD's CAE Handbook contains 95+ high-quality, expert-built digital handbook solutions. This demo shows how a 3D attachment lug assembly is solved in multi-body contact, and post-processing of the data of interest (von Mises and max principal stresses) is automatically reported (scroll to view the embedded video).]]>

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]]> Numerical Simulation Series: Mechanical Contact https://www.esrd.com/resource-library/product/numerical-simulation-series-mechanical-contact/ Tue, 13 Oct 2020 22:42:03 +0000 https://esrd.com/?post_type=product&p=17245 Abstract: In this edition of ESRD's Numerical Simulation Series, the computation of mechanical contact via numerical simulation is examined in detail. Highlights include:
  • The modified augmented Lagrangian algorithm for frictionless contact
  • Mechanical contact implementation and examples
  • Modeling of fastened structural connections
  • The fastener and link objects
  • Remarks on current modeling practices for fastened structural connections
  • Model problems.
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