ESAComp Capabilities

Analysis tools

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  • Fiber/matrix micromechanics
    • ply engineering constants and thermal/moisture expansion coefficients based on the mechanics of materials approach, Halpin-Tsai, or user specified micromechanics models
    • ply properties as a function of volume/weight fraction or ply directionality of bi-directional plies
  • Plies
    • analyses for constitutive and thermal/moisture expansion behavior of plies
    • ply carpet plots for (0/90/±θ)s laminates
  • Laminates
    • 2.5D behavior - classical lamination theory (CLT) based analyses for constitutive and thermal/moisture expansion behavior of solid and sandwich laminates
    • parameterized "theta-laminates" - orientation of ±θ-layers as a variable
    • parameterized "p-laminates" - proportional amount of selected layers as a variable
    • laminate strength in principal loading conditions
    • load response - laminate and layer level response including out-of-plane shear stresses, effects due to thermal/moisture loads
    • failure
      • first ply failure (FPF) and degraded laminate failure (DLF)
      • several commonly used failure criteria (e.g. max stress/strain, Tsai-Hill, Tsai-Wu, Puck 2D/3D) and a possibility to add user specified criteria
      • interlaminar shear failure
      • core shear failure and face sheet wrinkling of sandwich laminates
      • constant and variable load approach in determining margins of safety
      • prediction of failure modes and critical layers
    • failure and design envelopes
      • FPF and DLF analyses combined with wrinkling
      • stress or strain space, any combination of principal loads
      • layer envelopes of a single laminate, laminate envelopes for multiple laminates and multiple failure criteria, thermal/moisture or mechanical load as parameter
    • probabilistic 2.5D behavior - Monte Carlo simulation, input as statistical distributions of ply properties and given layer angle variations
    • sensitivity studies for 2.5D behavior and FPF analyses - tolerances for a ply property or layer orientations
    • notched laminate analysis of circular and elliptic holes - load response, FPF, and stress concentration factors
    • layer drop-off - exterior or embedded drop-off in a solid laminate or a face sheet of a sandwich
    • straight free edge analysis using built-in FE solver
    • laminate through-the-thickness temperature distribution
    • laminate through-the-thickness moisture distribution and moisture content as a function of time
  • Panels
    • flat and curved panels with or without stiffeners
    • Mindlin plate analysis using integrated Elmer FE solver
    • rectangular plates with any combination of clamped, simply supported, and free edges
    • possibility to define beam type stiffeners with I, C, Z, or T cross section
    • possibility to define hat (omega) stiffeners (bonded or integral)
    • load response, failure and stability under applied loads (combinations of point loads, line loads, pressure load and line loads)
    • natural frequencies
  • Beams and columns
    • cross section properties for laminate/sandwich, circular, elliptic, rectangular, and I cross sections
    • beam analysis based on Timoshenko beam theory
    • combinations of clamped, simply supported, and free end supports
    • load response and failure due to transverse loads (combinations of a point load, distributed load and end moments), stability and failure under axial loads, natural frequencie
  • Bonded joints
    • joint types: single lap, single strap, double lap, double strap, single sided scarfed lap joint, double sided scarfed lap joint, bonded doubler
    • beam and plate models for adherends, linear and nonlinear adhesive models
    • combinations of axial, bending, and in-plane/out-of-plane shear loads
    • joint deflections, forces and moments in adherends, adhesive stresses, margins of safety for cohesive failure of adhesive and laminate failure due to in-plane and bending loads
  • Mechanical joints
    • single and double lap joints under axial loads
    • fastener and by-pass loads, laminate stresses and strains on fastener holes, margins of safety for failure, prediction of failure mode