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为了实现蒴果壳与蓖麻籽成功剥离,载荷的大小以及载荷来自的方位相当重要.在蓖麻蒴果壳的物理特性测定分析基础上,运用接触力学对蓖麻蒴果脐部与顶部和腰部受到压载荷时,进行力学特性的试验分析与研究.结果显示蒴果在脐部与顶部受到压载荷作用时,果壳破裂的位置在蒴果顶部中缝处,中果皮内面产生裂纹而使蓖麻籽在果壳中脱出;蒴果在腰部受到压载荷作用时,果壳破裂的位置出现在蒴果中果皮中缝的两端,蒴果四周角靠近直线处也有裂纹而使蓖麻籽在果壳中脱出,蓖麻蒴果脐部与顶部受力大于腰部受力.
In order to achieve the successful peeling of the capsule shell and the castor bean seeds, the size of the load and the orientation from which the load is derived are very important.Based on the analysis of the physical characteristics of the castor shell, the contact mechanics is used to measure the pressure on the umbilicus and top and waist of the castor capsule The results show that when the capsule is under the pressure load on the umbilicus and the top of the capsule, the position of the shell is broken at the middle of the capsule top, the inner surface of the mesocarp cracks and the castor seeds in the shell In the waist; when the capsule is subjected to a compressive load on the waist, the cracked position of the shell occurs at both ends of the mid-section of the pericarp of the capsule, and the crack of the circumference of the capsule near the straight line causes the castor beans to escape in the shell; Department and the top of the force greater than the waist force.