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基于对西瓜结构振动特性的分析，提出了对西瓜进行理论建模的空心球与实心球理论，通过有限元计算与振动模态试验对比，验证了上述理论的合理性，并找出了多边形振型这一区别成熟与未成熟瓜的特征模态。
Based on the analysis of the vibrational characteristics of watermelon structure, the theory of hollow sphere and solid sphere for modeling watermelon was proposed. The comparison between the finite element method and the vibrational mode experiment proves the rationality of the above theory and finds out that the polygon vibration This distinguishes the characteristic modalities of mature and immature melons.