[1] Milton G W, Cherkaev A V. Which elasticity tensors are realizable-[J]. Journal of Engineering Materials and Technology, 1995, 117(4): 483-493.

[2] Norris A N. Acoustic cloaking theory[J]. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2008, 464(2097): 2411-2434.

[3] Norris A N. Acoustic metafluids[J]. The Journal of the Acoustical Society of America, 2009, 125(2): 839-849.

[4] Scandrett C L, Boisvert J E, Howarth T R. Acoustic cloaking using layered pentamode materials[J]. The Journal of the Acoustical Society of America, 2010, 127(5): 2856-2864.

[5] Tian Ye, Wei Qi, Cheng Ying, et al. Broadband manipulation of acoustic wavefronts by pentamode metasurface[J]. Applied Physics Letters, 2015, 107(22): 221906.

[6] Bückmann T, Stenger N, Kadic M, et al. Tailored 3D me-chanical metamaterials made by dip-in direct-laser-writing optical lithography[J]. Advanced Materials, 2012, 24(20): 2710-2714.

[7] Kadic M, Bückmann T, Stenger N, et al. On the practicability of pentamode mechanical metamaterials[J]. Applied Physics Letters, 2012, 100(19): 191901.

[8] Martin A, Kadic M, Schittny R, et al. Phonon band structures of three-dimensional pentamode metamaterials[J]. Physical Re-view B, 2012, 86(15): 155116.

[9] Schittny R, Bückmann T, Kadic M, et al. Elastic measurements on macroscopic three-dimensional pentamode metamaterials [J]. Applied Physics Letters, 2013, 103(23): 231905.

[10] Kadic M, Bückmann T, Schittny R, et al. On anisotropic ver-sions of three-dimensional pentamode metamaterials[J]. New Journal of Physics, 2013, 15(2): 023029.

[11] Bückmann T, Schittny R, Thiel M, et al. On three-dimensional dilational elastic metamaterials[J]. New Journal of Physics, 2014, 16(3): 033032.

[12] Bückmann T, Thiel M, Kadic M, et al. An elasto-mechanical unfeelability cloak made of pentamode metamaterials[J]. Na-ture Communications, 2014, 5: 4130.

[13] Kadic M, Bückmann T, Schittny R, et al. Metamaterials beyond electromagnetism[J]. Reports on Progress in Physics, 2013, 76(12): 126501.

[14] Aravantinos-Zafiris N, Sigalas M M, Economou E N. Elastodynamic behavior of the three dimensional layer-by-layer metamaterial structure[J]. Journal of Applied Physics, 2014, 116(13): 133503.

[15] Xiao Qianjin, Wang Lei, Wu Tao, et al. Research on layered design of ring-shaped acoustic cloaking using bimode met-amaterial[J]. Applied Mechanics and Materials, 2014, 687-691: 4399-4404.

[16] 张向东, 陈虹, 王磊, 等. 圆柱形分层五模材料声学隐身衣的理论与数值分析[J]. 物理学报, 2015, 64(13): 0134303.

    Zhang Xiangdong, Chen Hong, Wang Lei, et al. Theoretical and numerical analysis of layered cylindrical pentamode acoustic cloak[J]. Acta Physica Sinica, 2015, 64(13): 0134303.

[17] Cai Xuan, Wang Lei, Zhao Zhiguo, et al. The mechanical and acoustic properties of two-dimensional pentamode metamaterials with different structural parameters[J]. Applied Physics Letters, 2016, 109(13), doi: 10.1063/1.4963818.

[18] Chen Yi, Liu Xiaoning, Hu Gengkai. Latticed pentamode acoustic cloak[J]. Scientific Reports, 2015, 5: 15745.

[19] 陈毅, 刘晓宁, 向平, 等. 五模材料及其水声调控研究[J]. 力学进展, 2016, 46(1): 382-434.

    Chen Yi, Liu Xiaoning, Xiang Ping, et al. Pentamode material for underwater acoustic wave control[J]. Advances In Mechanics, 2016, 46(1): 382-434.

[20] Wang Zhaohong, Cai Chengxin, Li Qingwei, et al. Pentamode metamaterials with tunable acoustics band gaps and large figures of merit[J]. Journal of Applied Physics, 2016, 120(2): 024903.

[21] Cai Chengxin, Wang Zhaohong, Li Qingwei, et al. Pentamode metamaterials with asymmetric double-cone elements[J]. Journal of Physics D: Applied Physics, 2015, 48(17): 175103.

[22] 王兆宏, 李青蔚, 蔡成欣, 等. 可用于隔声和带隙调控的五模式超材料[J]. 声学学报, 2017, 42.(in press)

[23] Torrent D, Sánchez-Dehesa J. Acoustic cloaking in two dimensions: a feasible approach[J]. New Journal of Physics, 2008, 10(6): 063015.

[24] 温熙森, 温激鸿, 郁殿龙, 等. 声子晶体[M]. 北京: 国防工业出版社, 2009.

    Wen Xisen, Wen Jihong, Yu Dianlong, et al. Phononic crystals [M]. Beijing: National Defense Industry Press, 2009.

[25] Pendry J B, Li J. An acoustic metafluid: realizing a broadband acoustic cloak[J]. New Journal of Physics, 2008, 10(11): 115032.

[26] Cummer S A, Schurig D. One path to acoustic cloaking[J]. New Journal of Physics, 2007, 9(3): 45.

[27] Shelby R A, Smith D R, Schultz S. Experimental verification of a negative index of refraction[J]. Science, 2001, 292(5514): 77-79.

[28] 杨桂通. 弹性力学简明教程[M]. 北京: 清华大学出版社, 2006: 41-47.

    Yang Guitong. Introduction to elasticity[M]. Beijing: Tsinghua University Press, 2006: 41-47.

[29] Auld B A. Acoustic fields and waves in solids[M]. New York: John Wiley & Sons, 1992.

[30] Amendola A, Smith C J, Goodall R, et al. Experimental re-sponse of additively manufactured metallic pentamode materials confined between stiffening plates[J]. Composite Structures, 2016, 142: 254-262.

[31] Hladky-Hennion A C, Vasseur J O, Haw G, et al. Negative refraction of acoustic waves using a foam-like metallic struc-ture[J]. Applied Physics Letters, 2013, 102(14): 144103

[32] Chen Huaijun, Zeng Hongcheng, Ding Changlin, et al. Dou-ble-negative acoustic metamaterial based on hollow steel tube meta-atom[J]. Journal of Applied Physics, 2013, 113(10): 104902.

[33] Chen Huaijun, Zhai Shilong, Ding Changlin, et al. Meta-atom cluster acoustic metamaterial with broadband negative effective mass density[J]. Journal of Applied Physics, 2014, 115(5): 054905.

[34] 崔战友, 陈天宁, 许锐奇, 等. 二维开缝金属圆管带隙结构禁带特性中缝参数的研究[J]. 物理学报, 2009, 58(7): 4752-4759.

    Cui Zhanyou, Chen Tianning, Xu Ruiqi, et al. The role of slit in stop band of periodical narrow slit metal tubes[J]. Acta Physica Sinica, 2009, 58(7): 4752-4759.