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Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

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In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
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A planar symmetry of charge density is obtained when charges are uniformly spread over a large flat surface. In planar symmetry, all points in a plane parallel to the plane of charge are identical with respect to the charges. Suppose the plane of the charge distribution is the xy-plane, and the electric field at a space point P with coordinates (x, y, z) is to be determined. Since the charge density is the same at all (x, y) - coordinates in the z = 0 plane, by symmetry, the electric field at P...
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When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
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An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
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Indirect Fabrication of Lattice Metals with Thin Sections Using Centrifugal Casting
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DDSM: Design-Oriented Dual-Scale Shape-Material Model for Lattice Material Components.

Chao Feng1, Rui Yang1, Bin Niu1

  • 1School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China.

Materials (Basel, Switzerland)
|November 11, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a novel CAD model for lattice materials, improving design intent capture and dual-scale representation. This new model efficiently stores geometry and material data, overcoming limitations of traditional formats.

Keywords:
dual-scale modelimplicit representationlattice material componentsnon-manifold topology

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Area of Science:

  • Computational Engineering
  • Materials Science
  • Computer-Aided Design

Background:

  • Conventional CAD formats struggle to represent design intent and material information for lattice structures.
  • Boundary Representation (B-Rep) models generate excessive data, hindering efficient design and analysis.
  • Existing methods lack a robust framework for dual-scale representation of lattice materials.

Purpose of the Study:

  • To propose a new Computer-Aided Design (CAD) model for lattice material components.
  • To develop a dual-scale framework that captures both geometry and material distribution effectively.
  • To address the limitations of conventional CAD models in representing design intent and material data.

Main Methods:

  • A novel shape-material model for lattice components is presented.
  • A compact, face-based, non-manifold topological data structure is used for macroscopic representation.
  • Implicit functions are employed for microscopic-scale representation of lattice materials.

Main Results:

  • The proposed CAD model enhances the representation of design intent for lattice structures.
  • The dual-scale framework efficiently manages geometric and material information with reduced data size.
  • Numerical experiments confirm the model's effectiveness and support for solid modeling queries.

Conclusions:

  • The new CAD model offers a powerful and space-efficient solution for designing lattice materials.
  • The proposed representation method supports unambiguous expression of shape-material information at multiple scales.
  • This approach facilitates better design intent capture and data management in lattice material design.