微米木纤维医用颈椎夹板的力学性能及有限元分析（英文）
发布时间：2018-08-01 15:19
【摘要】：【目的】研究微米木纤维医用颈椎夹板的力学性能,模拟颈椎夹板受到外力时的力学数值,分析其是否可以满足人体使用强度要求。【内容】选择直径为16μm的红松木纤维制备试验试样,对木纤维板进行三点弯曲力学性能测试,并运用扫描电镜(SEM)对其微观结构进行表征。利用ABAQUS程序对微米木纤维颈锥夹板进行压缩和冲击性能的模拟,并对其模拟结果进行分析。【结果】微米木纤维颈锥夹板沿上颈长度对应曲面由内向外压缩,后片的承载能力略高于前片;沿侧曲面由外向内压缩的抗压能力高于沿上颈长度对应曲面由内向外压缩的抗压能力。通过选用不同的冲击能量研究微米木纤维颈锥夹板在低速冲击作用下的损伤程度,冲击损伤随着冲击能量的增大而增大。【结论】颈锥夹板的有限元力学性能数值模拟与实际三点弯曲力学试验数值接近,说明试验的合理性。夹板最大可承受30 MPa的应力,可满足人体使用强度要求。
[Abstract]:[objective] to study the mechanical properties of micron wood fiber medical cervical spine splint, and to simulate the mechanical value of cervical spine splint under external force. Whether it can meet the requirements of the human body's use strength is analyzed. The test sample is prepared with the diameter of 16 渭 m Korean pine wood fiber, and the three-point bending mechanical properties of the wood fiber board are tested. The microstructure was characterized by scanning electron microscope (SEM). The compression and impact properties of micron wood fiber neck cone splint were simulated by ABAQUS program, and the simulation results were analyzed. The bearing capacity of the back plate is slightly higher than that of the front plate, and the compressive capacity of the lateral surface is higher than that of the surface corresponding to the length of the upper neck from the inside to the outside. The damage degree of micron wood fiber neck cone splint under low speed impact was studied by using different impact energy. The impact damage increases with the increase of impact energy. [conclusion] the numerical simulation of the finite element mechanical properties of the cervical cone splint is close to that of the actual three-point bending mechanical test, which shows the rationality of the test. The splint can withstand up to 30 MPa stress, which can meet the human strength requirements.
【作者单位】： 东北林业大学林业与木工机械工程技术中心;
【基金】：Natural Science Foundation Project of Heilongjiang Province(C201413)
【分类号】：R318.01
本文编号：2157991
[Abstract]:[objective] to study the mechanical properties of micron wood fiber medical cervical spine splint, and to simulate the mechanical value of cervical spine splint under external force. Whether it can meet the requirements of the human body's use strength is analyzed. The test sample is prepared with the diameter of 16 渭 m Korean pine wood fiber, and the three-point bending mechanical properties of the wood fiber board are tested. The microstructure was characterized by scanning electron microscope (SEM). The compression and impact properties of micron wood fiber neck cone splint were simulated by ABAQUS program, and the simulation results were analyzed. The bearing capacity of the back plate is slightly higher than that of the front plate, and the compressive capacity of the lateral surface is higher than that of the surface corresponding to the length of the upper neck from the inside to the outside. The damage degree of micron wood fiber neck cone splint under low speed impact was studied by using different impact energy. The impact damage increases with the increase of impact energy. [conclusion] the numerical simulation of the finite element mechanical properties of the cervical cone splint is close to that of the actual three-point bending mechanical test, which shows the rationality of the test. The splint can withstand up to 30 MPa stress, which can meet the human strength requirements.
【作者单位】： 东北林业大学林业与木工机械工程技术中心;
【基金】：Natural Science Foundation Project of Heilongjiang Province(C201413)
【分类号】：R318.01
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1 马岩;甘启蒙;;生物弹性轻软微米木纤维材料应用前景[J];林业机械与木工设备;2008年03期
，本文编号：2157991
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