【摘要】：【目的】研究微米木纖維醫(yī)用頸椎夾板的力學性能,模擬頸椎夾板受到外力時的力學數(shù)值,分析其是否可以滿足人體使用強度要求。【內(nèi)容】選擇直徑為16μm的紅松木纖維制備試驗試樣,對木纖維板進行三點彎曲力學性能測試,并運用掃描電鏡(SEM)對其微觀結構進行表征。利用ABAQUS程序?qū)ξ⒚啄纠w維頸錐夾板進行壓縮和沖擊性能的模擬,并對其模擬結果進行分析。【結果】微米木纖維頸錐夾板沿上頸長度對應曲面由內(nèi)向外壓縮,后片的承載能力略高于前片;沿側曲面由外向內(nèi)壓縮的抗壓能力高于沿上頸長度對應曲面由內(nèi)向外壓縮的抗壓能力。通過選用不同的沖擊能量研究微米木纖維頸錐夾板在低速沖擊作用下的損傷程度,沖擊損傷隨著沖擊能量的增大而增大�！窘Y論】頸錐夾板的有限元力學性能數(shù)值模擬與實際三點彎曲力學試驗數(shù)值接近,說明試驗的合理性。夾板最大可承受30 MPa的應力,可滿足人體使用強度要求。
[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.
【作者單位】： 東北林業(yè)大學林業(yè)與木工機械工程技術中心;
【基金】：Natural Science Foundation Project of Heilongjiang Province(C201413)
【分類號】：R318.01

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