다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

Electromagnetic forming—A review

Finite element simulation of the temperature and stress fields in single layers built without-support in selective laser melting

Selective laser melting (SLM) is an attractive technology, enabling the manufacture of customised, complex metallic designs, with minimal wastage. However, uptake by industry is currently impeded by several technical barriers, such as the control of residual stress, which have a detrimental effect on the manufacturability and integrity of a component. Indirectly, these impose severe design restrictions and reduce the reliability of components, driving up costs. This paper uses a thermo-mechanical model to better understand the effect of laser scan strategy on the generation of residual stress in SLM. A complex interaction between transient thermal history and the build-up of residual stress has been observed in the two laser scan strategies investigated. The temperature gradient mechanism was discovered for the creation of residual stress. The greatest stress component was found to develop parallel to the scan vectors, creating an anisotropic stress distribution in the part. The stress distribution varied between laser scan strategies and the cause has been determined by observing the thermal history during scanning. Using this, proposals are suggested for designing laser scan strategies used in SLM.

https://nottingham-repository.worktribe.com/preview/974815/ADDMA-D-16-00022.pdf

Understanding the effect of laser scan strategy on residual stress in selective laser melting through thermo-mechanical simulation

An improved prediction of residual stresses and distortion in additive manufacturing

Numerical simulation of temperature field and residual stress in multi-pass welds in stainless steel pipe and comparison with experimental measurements

FEM prediction of welding residual stress and distortion in carbon steel considering phase transformation effects

Prediction of welding distortion and residual stress in a thin plate butt-welded joint

Numerical simulation of welding distortion in large structures

Prediction of welding residual stress in multi-pass butt-welded modified 9Cr–1Mo steel pipe considering phase transformation effects

Dean Deng

Papers

Numerical simulation of temperature field and residual stress in multi-pass welds in stainless steel pipe and comparison with experimental measurements

FEM prediction of welding residual stress and distortion in carbon steel considering phase transformation effects

Prediction of welding distortion and residual stress in a thin plate butt-welded joint

Numerical simulation of welding distortion in large structures

Prediction of welding residual stress in multi-pass butt-welded modified 9Cr–1Mo steel pipe considering phase transformation effects