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尼龙竿是由玻璃纤维做成,长约5米左右,采用环氧树脂加固的园管形撑竿。它重量轻(约3—4公斤),挠度大,弹性好。有效地利用这些优点,形成合理的现代撑竿跳高技术,将导致运动成绩的大幅度提高。一、尼龙竿的力学性能(一)形变、“能量贮存”与弹力采用尼龙竿进行撑竿跳高,当运动员将竿头插入插穴时,竿子接受运动员经过助跑、起跳所产生的动量,便会出现明显的力学特性——发生形变。形变的程度大大超过其它竿子(如把长度一样的尼龙竿、金属竿、毛竹竿各一根,两端固定,中间
Nylon rod is made of glass fiber, about 5 meters long, the use of epoxy resin reinforced garden pole rod. It is light weight (about 3-4 kg), deflection, good elasticity. Effective use of these advantages to form a reasonable modern pole vault technology, will lead to a substantial increase in athletic performance. First, the mechanical properties of nylon rod (A) deformation, “energy storage” and elastic Nylon rod pole vault, when the player will pole into the hole, the pole to accept the athlete after the run-off, the momentum generated by the jump will be Appear obvious mechanical properties - deformation. The degree of deformation greatly exceeds the other pole (such as the same length of nylon rod, metal pole, bamboo pole each one, fixed at both ends, the middle