ビードオンプレート溶接における3次元残留応力のTL_yL_z法およびT法による測定 : 固有ひずみ分布の関数表示による残留応力の推定法と測定法(第2報)

• 上田幸雄

  大阪大学

• 麻 寧緒

  大阪大学

• 古木 良一

  大阪大学

書誌事項

タイトル別名

• TL_yL_z Method and T Method for Measurement of 3 Dimensional Residual Stresses in Bead-on-plate Welds : Estimating and Measuring Methods of Residual Stresses Using Inherent Strain Distribution Described as Functions (Report 2)

抄録

A distribution pattern of inherent strains in long bead-on-plate welds, which has 3 unknown parameters for each inherent strain component, is proposed. Based on the proposed distribution pattern of inherent strains, the measurements for three dimensional residual stresses can be done as followings.(1) 3 pieces of specimens T, L_y and L_z (named TL_yL_z Method) are cut from bead-on-plate weld and three dimensional inherent strain components are separated.(2) Measurements are performed on T, L_y and L_z specimens respectively to estimate the inherent strain zones and the unknown parameters for their distributions.(3) Three dimensional residual stresses are computed by using the inherent strains measured in step 2). When inherent strains distribute in all thickness of plate, the measurements are performed only on T specimen (named T Method), and the inherent strain zones and their distributions can be estimated. To verify TL_yL_z method and T method, numerical experiment and actual measurement are carried out respectively for mild steel and stainless steel bead-on-plate welds. The measured residual stresses by the new methods show very good accuracy compared with the values computed by thermal elastic-plastic analysis and those directly measured on the surface.

収録刊行物

• 溶接学会論文集

  溶接学会論文集 11 (4), 555-562, 1993

  社団法人溶接学会

キーワード

• Residual stresses
• inherent strain
• distribution pattern
• TL_yL_z Method
• T Method
• bead-on-plate welds

詳細情報

• CRID: 1573668927160711040
• NII論文ID: 110003423280
• NII書誌ID: AN1005067X
• ISSN: 02884771
• 本文言語コード: ja
• データソース種別:
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