CAJ | 학술논문

利用同轴反射光显微镜拍摄热轧非织造材料的多层图像，结合多聚焦图像融合技术，得到材料的清晰图像和纤维位置信息；再通过python编程构建热轧非织造材料几何结构有限元模型，运用ABAQUS程序实现材料力学拉伸性能模拟，获得不同模型参数条件下应力-应变曲线。对比不同参数条件下有限元模型所得的应力-应变曲线发现：材料中热黏合点可以视为弹性体；在应变为0．38时纤维性能对整体材料应力的影响为30％，而热轧辊温度、生产速度和纤网面密度等因素对整体材料的应力影响为70％。
이용동축반사광현미경박섭열알비직조재료적다층도상，결합다취초도상융합기술，득도재료적청석도상화섬유위치신식；재통과python편정구건열알비직조재료궤하결구유한원모형，운용ABAQUS정서실현재료역학랍신성능모의，획득불동모형삼수조건하응력-응변곡선。대비불동삼수조건하유한원모형소득적응력-응변곡선발현：재료중열점합점가이시위탄성체；재응변위0．38시섬유성능대정체재료응력적영향위30％，이열알곤온도、생산속도화섬망면밀도등인소대정체재료적응력영향위70％。
A new FE model for describing the structure of thermal-bonded nonwovens is proposed in this study .The coordinates of fibers of samples are obtained from Coaxial reflected optical microscope with multi-focus image fusion .Using python language , the new FE modal is established with the coordinates .In the finite element model , contrasting simulated stress-strain curves under different parameters of the viscoe-lastic material of bond points , the results showed that in the initial period of the mechanical tensile , plastic parameter of the thermal bonding points has 5 .4 percent effect on the mechanical properties of the whole material , the bond points can be regarded as an elastic body .In the finite element model , contrasting simulated stress-strain curves under different parameters of the viscoelastic material of fibers , the results showed that when strain is 38%, the mechanical properties of fibers have 30%effect impact on mechanical properties of the whole materials , roller temperature, production speed , fibre webs area density and other factors have 70%effect impact on mechanical properties of the whole materials .