【摘要】：【目的】研究微米木纖維醫(yī)用頸椎夾板的力學(xué)性能,模擬頸椎夾板受到外力時(shí)的力學(xué)數(shù)值,分析其是否可以滿(mǎn)足人體使用強(qiáng)度要求�！緝�(nèi)容】選擇直徑為16μm的紅松木纖維制備試驗(yàn)試樣,對(duì)木纖維板進(jìn)行三點(diǎn)彎曲力學(xué)性能測(cè)試,并運(yùn)用掃描電鏡(SEM)對(duì)其微觀結(jié)構(gòu)進(jìn)行表征。利用ABAQUS程序?qū)ξ⒚啄纠w維頸錐夾板進(jìn)行壓縮和沖擊性能的模擬,并對(duì)其模擬結(jié)果進(jìn)行分析�！窘Y(jié)果】微米木纖維頸錐夾板沿上頸長(zhǎng)度對(duì)應(yīng)曲面由內(nèi)向外壓縮,后片的承載能力略高于前片;沿側(cè)曲面由外向內(nèi)壓縮的抗壓能力高于沿上頸長(zhǎng)度對(duì)應(yīng)曲面由內(nèi)向外壓縮的抗壓能力。通過(guò)選用不同的沖擊能量研究微米木纖維頸錐夾板在低速?zèng)_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(jié)論】頸錐夾板的有限元力學(xué)性能數(shù)值模擬與實(shí)際三點(diǎn)彎曲力學(xué)試驗(yàn)數(shù)值接近,說(shuō)明試驗(yàn)的合理性。夾板最大可承受30 MPa的應(yīng)力,可滿(mǎn)足人體使用強(qiáng)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(xué)林業(yè)與木工機(jī)械工程技術(shù)中心;
【基金】：Natural Science Foundation Project of Heilongjiang Province(C201413)
【分類(lèi)號(hào)】：R318.01

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 馬巖;甘啟蒙;;生物彈性輕軟微米木纖維材料應(yīng)用前景[J];林業(yè)機(jī)械與木工設(shè)備;2008年03期

，

本文編號(hào)：2157991