{"id":3891,"date":"2025-10-18T14:03:05","date_gmt":"2025-10-18T06:03:05","guid":{"rendered":"https:\/\/www.lispring.com\/?p=3891"},"modified":"2025-10-18T14:03:05","modified_gmt":"2025-10-18T06:03:05","slug":"finite-element-analysis-of-lispring-wave-springs-enhancing-design-precision-and-performance-reliability","status":"publish","type":"post","link":"https:\/\/wp.lispring.com\/ja\/finite-element-analysis-of-lispring-wave-springs-enhancing-design-precision-and-performance-reliability\/","title":{"rendered":"\u30ea\u30b9\u30d7\u30ea\u30f3\u30b0\u6ce2\u52d5\u3070\u306d\u306e\u6709\u9650\u8981\u7d20\u89e3\u6790\uff1a\u8a2d\u8a08\u7cbe\u5ea6\u3068\u6027\u80fd\u4fe1\u983c\u6027\u306e\u5411\u4e0a"},"content":{"rendered":"

In modern precision engineering, \u30a6\u30a7\u30fc\u30d6\u30fb\u30b9\u30d7\u30ea\u30f3\u30b0\u30b9<\/a> have become a key component for achieving compact yet reliable force control in mechanical assemblies. As industries increasingly demand smaller, lighter, and more efficient mechanisms, the design and validation of these springs must evolve beyond traditional empirical methods. Finite Element Analysis (FEA) offers an advanced, physics-based approach to predict and optimize spring behavior under real-world loading conditions.<\/p>\n

The figure shown above illustrates a total deformation analysis of a single-turn \u30a6\u30a7\u30fc\u30d6 \u30b9\u30d7\u30ea\u30f3\u30b0<\/a> under static compression, performed using ANSYS Structural simulation. Through this analysis, engineers can accurately visualize how the spring reacts to axial loading, enabling deeper insight into its performance, safety margin, and design optimization potential.<\/p>\n

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1. Simulation Objective and Setup<\/h3>\n

The main objective of this analysis is to evaluate the total deformation<\/strong> \u3068 stress distribution<\/strong> of the \u30a6\u30a7\u30fc\u30d6 \u30b9\u30d7\u30ea\u30f3\u30b0<\/a> under a specified compression load. The spring geometry was modeled according to actual production dimensions, with careful attention to wave height, thickness, and number of waves per turn\u2014factors that critically influence spring stiffness and deflection characteristics.<\/p>\n

In the ANSYS Static Structural module, the lower \u30b3\u30f3\u30bf\u30af\u30c8<\/a> surface was set as a fixed support, representing the stationary seat of the spring. The upper plate applied a uniform downward displacement, simulating the working compression that occurs in an assembled mechanism, such as a rotary vane pump<\/strong>, mechanical seal<\/strong>, or aerospace actuator<\/strong>. The contact between the \u30a6\u30a7\u30fc\u30d6 \u30b9\u30d7\u30ea\u30f3\u30b0<\/a> and the parallel plates was defined as frictionless to focus purely on elastic deformation and \u6750\u6599<\/a> response.<\/p>\n

Material properties were defined based on stainless steel (SUS304)<\/strong>, with an elastic modulus of 193 GPa and Poisson\u2019s ratio of 0.3. These parameters accurately represent the typical materials used in high-performance \u30a6\u30a7\u30fc\u30d6\u30fb\u30b9\u30d7\u30ea\u30f3\u30b0\u30b9<\/a>, ensuring that simulation results reflect real-world behavior.<\/p>\n

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2. Total Deformation and Structural Response<\/h3>\n

As indicated in the deformation contour plot, the maximum displacement reached approximately 3.35 mm<\/strong>, while the minimum deformation was near 0.0003 mm<\/strong>, localized at constrained contact zones. The wave crests exhibited the highest deflection, as expected, while the valleys\u2014supported by the contact surfaces\u2014remained relatively stable.<\/p>\n

This deformation pattern demonstrates the Wave Spring\u2019s<\/a> ability to store potential energy efficiently<\/strong> within a very small axial space. The nonlinear load\u2013deflection relationship characteristic of \u30a6\u30a7\u30fc\u30d6\u30fb\u30b9\u30d7\u30ea\u30f3\u30b0\u30b9<\/a> can also be inferred from the FEA results, providing engineers with valuable data for system-level load calibration.<\/p>\n

Moreover, the simulation confirms uniform deformation distribution along the circumferential direction, indicating excellent symmetry and load sharing<\/strong>. This ensures consistent force output and minimizes uneven stress that could lead to early fatigue failure.<\/p>\n

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3. Stress Analysis and Safety Considerations<\/h3>\n

Beyond total deformation, the stress results (not shown here but analyzed in the same model) reveal how local bending and compression interact at each wave crest. The maximum von Mises stress typically occurs at the inner radius of the crest<\/strong>, where bending curvature is greatest. Understanding this stress concentration is crucial for determining the spring\u2019s fatigue life<\/strong> \u3068 safety factor<\/strong>.<\/p>\n

By running iterative simulations, engineers can compare alternative \u30a6\u30a7\u30fc\u30d6 \u30b9\u30d7\u30ea\u30f3\u30b0<\/a> designs\u2014adjusting parameters such as:<\/p>\n