Quasicrystals （QCs） are sensitive to the piezoelectric （PE） effect. This paper studies static deformation of a multilayered one-dimensional （1D） hexagonal QC plate with the PE effect. The exact closed-form solut...Quasicrystals （QCs） are sensitive to the piezoelectric （PE） effect. This paper studies static deformation of a multilayered one-dimensional （1D） hexagonal QC plate with the PE effect. The exact closed-form solutions of the extended displacement and traction for a homogeneous piezoelectric quasicrystal （PQC）plate are derived from an eigensystem. The general solutions for multilayered PQC plates are then obtained using the propagator matrix method when mechanical and electrical loads are applied on the top surface of the plate. Numerical examples for several sandwich plates made up of PQC, PE, and QC materials are provided to show the effect of stacking sequence on phonon, phason, and electric fields under mechanical and electrical loads, which is useful in designing new composites for engineering structures.展开更多
文章针对7.62 mm 53式普通弹的防护,比较了防弹钢板与PE防弹板以及二者复合使用的防弹性能,分别找出了当前技术水平下较为优秀的结构方案和技术方案。在二者复合使用时,比较了不同材料作为迎弹面时防弹性能的差异,并分析了原因。此外,...文章针对7.62 mm 53式普通弹的防护,比较了防弹钢板与PE防弹板以及二者复合使用的防弹性能,分别找出了当前技术水平下较为优秀的结构方案和技术方案。在二者复合使用时,比较了不同材料作为迎弹面时防弹性能的差异,并分析了原因。此外,还比较了多种方案的制造成本,根据测试情况,对各种材料的后续使用给出了有针对性的建议。展开更多
基金Project supported by the National Natural Science Foundation of China(Nos.11502123 and11262012)the Natural Science Foundation of Inner Mongolia Autonomous Region of China(No.2015JQ01)
文摘Quasicrystals （QCs） are sensitive to the piezoelectric （PE） effect. This paper studies static deformation of a multilayered one-dimensional （1D） hexagonal QC plate with the PE effect. The exact closed-form solutions of the extended displacement and traction for a homogeneous piezoelectric quasicrystal （PQC）plate are derived from an eigensystem. The general solutions for multilayered PQC plates are then obtained using the propagator matrix method when mechanical and electrical loads are applied on the top surface of the plate. Numerical examples for several sandwich plates made up of PQC, PE, and QC materials are provided to show the effect of stacking sequence on phonon, phason, and electric fields under mechanical and electrical loads, which is useful in designing new composites for engineering structures.
文摘文章针对7.62 mm 53式普通弹的防护,比较了防弹钢板与PE防弹板以及二者复合使用的防弹性能,分别找出了当前技术水平下较为优秀的结构方案和技术方案。在二者复合使用时,比较了不同材料作为迎弹面时防弹性能的差异,并分析了原因。此外,还比较了多种方案的制造成本,根据测试情况,对各种材料的后续使用给出了有针对性的建议。
