TY - JOUR AU - Itoh, T. AU - Sakane, M. AU - Morishita, T. PY - 2015/06/19 Y2 - 2024/03/28 TI - Evaluation and visualization of multiaxial stress and strain states under non-proportional loading JF - Frattura ed Integrità Strutturale JA - Fra&IntStrut VL - 9 IS - 33 SE - Miscellanea DO - 10.3221/IGF-ESIS.33.33 UR - https://www.fracturae.com/index.php/fis/article/view/1499 SP - pages 289-301 AB - <p>This paper presents a simple method of determining stresses and strains and a severity of loading history under non-proportional loadings with defining the rotation angles of the maximum principal stress and strain in a three dimensional stress and strain space. Based on the method, non-proportional stress and strain ranges are derived and applicability of the range to the life evaluation for low carbon steel under non-proportional random strain paths are discussed. The strain range taking account of intensity of loading path reducing life can be suitable parameter for multiaxial fatigue life evaluation under multiaxial non-proportional loading. This paper also shows a method of visually presenting the principal stress and strain that assists designers to understand the loading mode whether proportional or non-proportional under 3 dimensional (6 stress/strain components) multiaxial loading.</p> ER -