Mech 1 (4).pdf - Biaxial Stress in a Hydraulic Cylinder Lab...

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Biaxial Stress in a Hydraulic Cylinder Lab Report Pressurised Cylinder with Open & Closed Ends Deepkumar Patel 12180586 Milan Soni 12125959
Table of Contents 1.0 Introduction ............................................................................... 3 1.1 Objectives .............................................................................................. 3 2.0 Test Procedure ........................................................................... 3 2.1 Apparatus .............................................................................................. 3 2.2 Procedure .............................................................................................. 4 3.0 Results ........................................................................................ 5 3.1 Open End ............................................................................................... 5 3.2 Closed End ............................................................................................. 6 4.0 Analysis and Interpretation of Results ....................................... 7 4.1 Comparison of Test results with the published Values .............................. 7 4.2 Comparison of strain values (Theoretical vs Measured values) ................. 7 4.3 Comparison of transformed strain values (Theoretical vs Measured values) .............................................................................................................. 7 4.4 Tresca max. Shear Stress Criterion and Von Mises criterion ..................... 8 5.0 Conclusion ..................................................................................... 8 6.0 References ..................................................................................... 8 A. Appendices .................................................................................... 9 A.1 Calculations ............................................................................................... 9
1.0 Introduction A hydraulic cylinder is loaded with pressure. In t his report , we can see an insight into how the strain of a mild steel cylinder can be used extensively to find more properties regarding the material such as its Young’s Modulus, its Poisson’s Ratio, and its von Mises stress, which gives an idea whether the material will fail when placed under a complex loading condition. This report is all about the various results which we obtained from applying Pressure to the mild steel hydraulically pressurised cylinder. 1.1 Objectives Fig.1 Objectives from Lab Sheet 2.0 Test Procedure 2.1 Apparatus The thin walled cylinder apparatus is a mild steel hydraulically pressurised cylinder. Open and closed end conditions are controlled by a thrust knob on the front of the cylinder. As sh own in Figure 2 , when the thrust knob is “wound in” against the piston, the pressure force on the piston is reacted by the external frame and there is no axial load on the cylinder walls. This is known as open end conditions. When the thrust knob is “wound out”, the

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