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<p>The purpose of this study was to carry out a numerical structural analysis of the Mix-kneader shaft using the Finite Element Method (FEM). The shaft model was built in SolidWorks and analyzed using ANSYS Workbench 2022 R2. Results showed a maximum deformation of 0.000052395&#xa0;m, equivalent von-Mises stress of 51.48&#xa0;MPa (25% of the 207&#xa0;MPa yield strength of stainless steel 304), and a maximum shear stress of 10.65&#xa0;MPa, significantly below the 51.75&#xa0;MPa permissible shear limit. The factor of safety ranged between 1.67 and 5. A fatigue life of 3&#xa0;million minutes (approx. 6 years) was predicted. These findings confirm the shaft’s design is structurally sound and reliable under operational loads, making it suitable for small-scale industrial soap processors in Uganda. This study contributes a validated FEM-based design approach for rotary shafts under combined torsion and bending loads.</p>

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Validation of the analytical Mix-kneader shaft design using finite element analysis

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月16日

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  • Noah Kisuule,
  • Julia Kigozi,
  • Peter Tumutegyereize,
  • Mutumba Raymond,
  • John Edison Sempiira

摘要

The purpose of this study was to carry out a numerical structural analysis of the Mix-kneader shaft using the Finite Element Method (FEM). The shaft model was built in SolidWorks and analyzed using ANSYS Workbench 2022 R2. Results showed a maximum deformation of 0.000052395 m, equivalent von-Mises stress of 51.48 MPa (25% of the 207 MPa yield strength of stainless steel 304), and a maximum shear stress of 10.65 MPa, significantly below the 51.75 MPa permissible shear limit. The factor of safety ranged between 1.67 and 5. A fatigue life of 3 million minutes (approx. 6 years) was predicted. These findings confirm the shaft’s design is structurally sound and reliable under operational loads, making it suitable for small-scale industrial soap processors in Uganda. This study contributes a validated FEM-based design approach for rotary shafts under combined torsion and bending loads.