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GB/T 43148-2023Additive manufacturing—Requirements for lightweight structure design (English PDF)

增材制造结构轻量化设计要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

September 7, 2023

Implementation date

September 7, 2023

Scope

GB/T 43148-2023 is the English-translated version of 增材制造结构轻量化设计要求.

This document specifies the requirements for designing lightweight structures for additive manufacturing: the overall requirements, the requirements for lightweight design based on cellular structures and on topology optimisation, and the process constraints each of those designs has to respect.

The document applies to lightweight structural design for additive manufacturing.

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Document preview — GB/T 43148-2023

National Standard of the People's Republic of China

ICS: 25.030
Classification: J 07

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceI
1 Scope
2 Normative reference documents
3 Terms and Definitions
4 Overall requirements for structural lightweight design
4.1 General
4.2 Design process
5 Structural lightweight design requirements based on porous structure
5.1 Three-dimensional lattice design
5.2 Other porous structure designs
5.3 Gradient lattice design
6 Structural lightweight design requirements based on topology optimization
6.1 Overview
6.2 Structure lightweight design process based on topology optimization
7 Additive manufacturing process constraint design requirements
7.1 Limit machining size constraints
7.2 Drape constraints
7.3 Closed cavity
7.4 Model placement
7.5 Stress concentration
Appendix A (informative) Schematic diagram of structural lightweight design based on porous structure
Appendix B (informative) Typical honeycomb structure and its mechanical properties
Appendix C (informative) Structural lightweight design example 12 based on topology optimization

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

1 Scope

This document specifies the overall requirements for structural lightweight design for additive manufacturing, lightweight design based on porous structure and topology optimization requirements and their process constraints design requirements.

This document is applicable to structural lightweight design for additive manufacturing.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 18784.2 CAD/CAM data quality assurance method

GB/T 24734.4 General principles for digital product definition data of technical product documents Part 4: Design model requirements

GB/T 35351 Additive Manufacturing Terminology

GB/T 37698 Additive manufacturing design requirements, guidelines and recommendations

3 Terms and definitions

The terms and definitions defined in GB/T 35351 and the following apply to this document.

3.1 Overhang structure

The structure of the suspended part in the model to be manufactured that does not directly contact the solid body along the direction of gravity.

3.2 Overhang angle

The acute angle between the outer surface of the overhang structure and the horizontal plane.

3.3 Overhang length

The overhang structure of the printed part is equivalent to the length behind the cantilever beam.

3.4 Porous structure

Three-dimensional open-pore structures arranged periodically or non-periodically.

3.5 Topology optimization

A method that optimizes material distribution in a given area based on load conditions, constraints, performance indicators and additive manufacturing process requirements. Optimized structural lightweight design method.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 47005-2026|GB/T 47006-2026|GB/T 47008-2026|GB/T 47195-2026|GB/T 47196-2026|GB/T 47564-2026

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