Failure mode of clamped air-back circular panel subjected to underwater shock loading
-
摘要: 为了研究水下近爆载荷作用下舰艇水下结构的动态变形及失效毁伤模式,利用水下爆炸冲击波等效加载装置结合高速摄影技术,对两种厚度的气背固支5A06铝合金圆板进行了水下冲击波加载实验。得到了气背固支圆板塑性大变形、中心拉伸撕裂和边界剪切破坏3种典型失效模式的动态响应历程。比较分析了冲击波强度、冲击因子、损伤参数和响应参数4种毁伤判据对该类靶板毁伤模式的判别能力。实验结果表明:考虑了结构因素的损伤参数和响应参数能够更为全面的判别结构的失效毁伤情况。Abstract: In this paper, the dynamic deformation and failure mode of 5A06 aluminum alloy clamped air-backed circular panels with two different thicknesses subjected to underwater shock loading were investigated using the non-explosive underwater shock loading device in combination with high-speed photography. The dynamic response history of the target panels was observed with more information about their failure modes obtained, and three modes of deformation and failure were identified, i. e. Mode Ⅰ (large plastic deformation), Mode Ⅱ (tensile tearing) and Mode Ⅲ (shear-off failure). According to the experimental results, the performance of four kinds of failure criteria (i. e. shock wave pressure, impulsive factor, damage parameter, and response parameter) on predicting the failure modes of the target panels was compared and analyzed. The experimental results showed that the damage and failure of underwater structures can be more comprehensively judged by taking account of the damage parameter and the response parameter of the target.
-
表 1 各损伤失效判据及实验结果比较
Table 1. Comparison of failure mode criteria with experimental results
Exp No. t/mm p/MPa f*/(kg1/2·m-1) nd nr (δ/R)max 失效模式 1 2.0 34.35 0.25 3.92 1 066 0.11 Ⅰ 2 2.0 61.83 0.45 12.44 3 386 0.22 Ⅰ 3 2.0 93.64 0.67 28.14 7 859 0.30 Ⅰ 4 0.5 18.32 0.13 18.20 79 289 0.14 Ⅰ 5 0.5 33.27 0.24 58.84 256 305 0.27 Ⅰ 6 0.5 41.18 0.29 89.50 389 860 0.37 Ⅰ 7 0.5 60.40 0.44 190.08 827 973 - Ⅱ 8 0.5 80.13 0.58 331.37 1 443 460 - Ⅱ 9 0.5 130.15 0.92 860.06 3 746 441 - Ⅲ 10 0.5 143.14 1.02 1 036.99 4 517 136 - Ⅲ -
[1] 张成亮, 朱锡, 侯海量等.近距空爆下复合抗爆舱壁变形破坏模式试验研究[J].振动与冲击, 2014, 33(11):33-37. http://d.old.wanfangdata.com.cn/Periodical/zdycj201411006Zhang Chengliang, Zhu Xi, Hou Hailiang, et al. Model tests for deformation and destruction modes of a blast resistant bulkhead under near distance explosion[J]. Journal of Vibration and Shock, 2014, 33(11):33-37. http://d.old.wanfangdata.com.cn/Periodical/zdycj201411006 [2] Olson M D, Nurick G N, Fagnan J R. Deformation and rupture of blast loaded square plates-predictions and experiments[J]. International Journal of Impact Engineering, 1993, 13(2):279-291. doi: 10.1016/0734-743X(93)90097-Q [3] Menkes S B, Opat H J. Tearing and shear failures in explosively loaded clamped beams[J]. Experimental Mechanics, 1973, 13(11):480-486. doi: 10.1007/BF02322734 [4] Ramajeyathilagam K, Vendhan C P. Deformation and rupture of thin rectangular plates subjected to underwater shock[J]. International Journal of Impact Engineering, 2004, 30(6):699-719. doi: 10.1016/j.ijimpeng.2003.01.001 [5] Teeling-Smith R G, Nurick G N. The deformation and tearing of thin circular plates subjected to impulsive loads[J]. International Journal of Impact Engineering, 1991, 11(1):77-91. doi: 10.1016/0734-743X(91)90032-B [6] Kazemahvazi S, Radford D, Deshpande V S, et al. Dynamic failure of clamped circular plates subjected to an underwater shock[J]. Jouranl of mechanics of materials and structures, 2007, 2(10):2007-2022. doi: 10.2140/jomms [7] Mcshane G J, Deshpande V S, Fleck N A. Underwater blast response of free-standing sandwich plates with metallic lattice cores[J]. International Journal of Impact engineering, 2010, 37(11):1138-1149 doi: 10.1016/j.ijimpeng.2010.05.004 [8] 陈长海, 朱锡, 侯海量等.近距空爆载荷作用下固支方板的变形计破坏模式[J].爆炸与冲击, 2012, 32(4):368-375. doi: 10.3969/j.issn.1001-1455.2012.04.005Chen Changhai, Zhu Xi, Hou Hailiang, et al. Deformation and failure modes of clamped square plates under close-range air blast loads[J]. Exolosion and Shock Wave, 2012, 32(4):368-375. doi: 10.3969/j.issn.1001-1455.2012.04.005 [9] 谌勇, 唐平, 汪玉等.刚塑性圆板受水下爆炸载荷时的动力响应[J].爆炸与冲击, 2005, 25(1):90-96. doi: 10.3321/j.issn:1001-1455.2005.01.017Chen Yong, Tang Ping, Wang Yu, et al.Dynamic response analysis of rigid plastic circular plate under underwater blast loading[J]. Exolosion and Shock Wave, 2005, 25(1):90-96. doi: 10.3321/j.issn:1001-1455.2005.01.017 [10] 黄超, 姚熊亮, 张阿漫.刚夹层板近场水下爆炸抗爆分析及其在舰船抗爆防护中的应用[J].振动与冲击, 2009, 29(9):73-76. http://www.cnki.com.cn/Article/CJFDTotal-ZDCJ201009018.htmHuang Chao, Yao Xiongliang, Zhang Aman. Analysis on blast resistance of steel sandwich plate under proximity underwater explosion loading and its application in ship protection[J]. Journal of Vibration and Shock, 2009, 29(9):73-76. http://www.cnki.com.cn/Article/CJFDTotal-ZDCJ201009018.htm [11] 任鹏, 张伟, 黄威等.非药式水下爆炸冲击波加载装置研究[J].爆炸与冲击, 2014, 34(3):334-339. doi: 10.11883/1001-1455(2014)03-0334-06Ren Peng, Zang Wei, Huang Wei, et al. Research on non-exlolsive underwater shock loading device[J]. Exolosion and Shock Wave, 2014, 34(3):334-339. doi: 10.11883/1001-1455(2014)03-0334-06 [12] 任鹏, 张伟, 黄威, 等.水下爆炸冲击波载荷作用下气背固支圆板的变形及应变场分析[J].船舶力学, 2013, 17(11):1339-1344. doi: 10.3969/j.issn.1007-7294.2013.11.014Ren Peng, Zhang Wei, Huang Wei, et al. Deformation mode and strain field analysis of clamped air-back circular plate subjected to underwater explosive loading[J]. Journal of Ship Mechanics, 2013, 17(11):1339-1344. doi: 10.3969/j.issn.1007-7294.2013.11.014 [13] 牟金磊, 朱锡, 张振华等.水下爆炸载荷作用下加筋板的毁伤模式[J].爆炸与冲击, 2009, 29(5):457-462. doi: 10.3321/j.issn:1001-1455.2009.05.002Mu Jinlei, Zhu Xi, Zhang Zhenhua, et al. Failure modes of stiffened plates subjected to underwater explosion[J]. Exolosion and Shock Wave, 2009, 29(5):457-462. doi: 10.3321/j.issn:1001-1455.2009.05.002 [14] Zhao Y-P. Suggestion of a new dimensionless number for dynamic plastic response of beams and plates[J]. Archive of Applied Mechanics, 1998, 68(7/8):524-538. http://cn.bing.com/academic/profile?id=8619214bc5260cf4cfe50a04fb470acf&encoded=0&v=paper_preview&mkt=zh-cn