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首页> 外文期刊>Applied Engineering in Agriculture >Some mechanical properties of safflower stalk.
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Some mechanical properties of safflower stalk.

机译：红花茎的一些力学性能。

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摘要

General physical properties, bending stress, modulus of elasticity, compressive strength, shearing stress, and specific shearing energy were determined for safflower (Carthamus tinctorius L.) stalks. Test specimens were taken from two locations of the stalk: from the bottom and from the top region. Experiments were conducted in five different moisture contents of stalk. The bending stress decreased with increasing moisture content. The average bending stress value varied between 54.02 and 13.81 MPa. The modulus of elasticity in bending decreased with increases at the moisture content and the modulus of elasticity increased towards the top region. The average modulus of elasticity varied between 439.49 and 95.62 MPa. The modulus of tangent in compressing decreased as the moisture content increased. The average tangent modulus varied between 31.39 and 6.35 daNmm-1. The shearing stress and the specific shearing energy increased with increasing moisture content. The maximum shearing stress and the specific shearing energy were 1.37 MPa and 94.64 mJmm-2, respectively. Both the shearing stress and specific shearing energy were found to be higher in the bottom region of the stalk.
机译：测定了红花（）茎的一般物理特性，弯曲应力，弹性模量，抗压强度，剪切应力和比剪切能。从茎杆的两个位置取样：从底部和顶部。在茎的五种不同水分含量中进行了实验。弯曲应力随着水分含量的增加而降低。平均弯曲应力值在54.02和13.81 MPa之间变化。弯曲弹性模量随着水分含量的增加而降低，并且弹性模量朝向顶部区域增加。平均弹性模量在439.49和95.62 MPa之间变化。随着水分含量的增加，压缩切线模量降低。平均切线模量在31.39和6.35 daNmm -1 之间变化。剪切应力和比剪切能随着含水量的增加而增加。最大剪切应力和比剪切能分别为1.37 MPa和94.64 mJmm -2 。发现在茎的底部区域中的剪切应力和比剪切能量都较高。

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