CM弹塑性本构模型在FLAC3D中的二次开发
PDF下载 (130)邢嘉豪,熊勇林*.CM弹塑性本构模型在FLAC3D中的二次开发[J].宁波大学学报(理工版),2024,37(2):36-47.DOI:10.20098/j.cnki.1001-5132.2023.0723
XING Jiahao,XIONG Yonglin.Secondary development of CM elastoplastic constitutive model based on FLAC3D[J].Journal of Ningbo University(Natural Science & Engineering Edition),2024,37(2):36-47.DOI:10.20098/j.cnki.1001-5132.2023.0723
| Title: | Secondary development of CM elastoplastic constitutive model based on FLAC3D |
| 作者: | 邢嘉豪, 熊勇林* |
| Author(s): | XING Jiahao, XIONG Yonglin |
| 关键词: | 超固结; 结构性; 弹塑性本构模型 |
| Keywords: | FLAC3D; overconsolidation; structural; elastoplastic constitutive model |
| 分类号: | TU435 |
| DOI: | 10.20098/j.cnki.1001-5132.2023.0723 |
| 文献标识码: | A |
| 摘要: | 显式有限差分程序FLAC3D由于自带的本构库多样性不足, 无法统一描述超固结和结构性这两种自然界土体典型力学特性的本构模型. 为了扩大FLAC3D应用范围, 更精确地模拟土体力学特性, 本文基于其自带的二次开发平台, 使用C++语言对交变移动(Cyclic Mobility, CM)弹塑性本构模型进行二次开发. 首先推导该模型的基本公式; 然后介绍FLAC3D的工作原理和关键开发步骤; 再通过不同应力路径下的测试, 对比FLAC3D模拟值和该本构的理论值, 验证开发的正确性; 最后通过对一维固结试验数据、三轴排水压缩试验数据和不排水三轴循环加载试验数据的模拟, 验证了二次开发模型能较好地模拟土体的力学行为. |
| Abstract: | Overconsolidation and structural properties are two typical mechanical properties of natural soil, while the explicit finite difference program FLAC3D lacks a unified constitutive model to describe these two characteristics due to its lack of diverse constitutive libraries. In order to expand the application scope of FLAC3D and more accurately simulate the mechanical properties of soil, the cyclic mobility elastic-plastic constitutive model was developed in C++ based on the built-in secondary development platform. Firstly, the basic formula of the model was derived, and secondly, the working principle and key development steps of FLAC3D were introduced. Subsequently, such development was verified by comparing the theoretical values of FLAC3D and the constitutive equation through tests under different stress paths. Finally, by simulating one- dimensional consolidation test data, triaxial drained compression test data, and undrained triaxial cyclic loading test data, it was verified that the secondary development model can effectively simulate the mechanical behavior of soil |
| 参考文献 /References: | [1].罗爱忠, 方娟. 基于FLAC3D黄土的湿载结构性本构模型二次开发[J]. 水利与建筑工程学报, 2018, 16(3):120- 125. [2].蒋邦友, 谭云亮, 王连国, 等. 基于Mogi-Coulomb准则的弹塑性损伤本构模型及其数值实现[J]. 中国矿业大学学报, 2019, 48(4):784-792. [3].赵立财. 含水砂岩蠕变损伤模型的二次开发及工程应用[J]. 长江科学院院报, 2021, 38(9):105-112, 120. [4].左双英, 肖明, 陈俊涛. 基于Zienkiewicz-Pande屈服准则的弹塑性本构模型在FLAC3D中的二次开发及应用[J]. 岩土力学, 2011, 32(11):3515-3520. [5].杨杰, 尹振宇, 金银富, 等. 结构性黏土模型在FLAC中的二次开发及应用[J]. 计算力学学报, 2017, 34(6): 739-747. [6].林志远, 熊传祥, 谢永宁, 等. 黏土广义塑性模型在FLAC3D中的数值实现与应用[J]. 水利与建筑工程学报, 2021, 19(3):159-165. [7].柳军修, 尹振宇, 杨杰, 等. 结构性黏土边界面模型在FLAC3D中的开发及隧道施工数值模拟[J]. 岩石力学与工程学报, 2020, 39(6):1277-1286. [8].邹佑学, 王睿, 张建民. 砂土液化大变形模型在FLAC3D中的开发与应用[J]. 岩土力学, 2018, 39(4): 1525-1534. [9].JIN Y F, YIN Z Y, SHEN S L, et al. Selection of sand models and identification of parameters using an enhanced genetic algorithm[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 2016, 40(8):1219-1240. [10].LEROUEIL S, VAUGHAN P R. Discussion: the general and congruent effects of structure in natural soils and weak rocks[J]. Géotechnique, 1991, 41(2):281-284. [11].谢定义, 齐吉琳. 土结构性及其定量化参数研究的新途径[J]. 岩土工程学报, 1999, 21(6):651-656. [12].陈贺欣, 陆国, 沈银斌, 等. 超固结比对合肥硬黏土剪胀特性的影响研究[J]. 合肥工业大学学报(自然科学版), 2023, 46(4):529-534. [13].宋晶, 叶冠林, 徐永福, 等. 考虑固结历史的结构性软土路基沉降数值模拟[J]. 岩土力学, 2018, 39(3):1037- 1046. [14].ZHANG F, YE B, NODA T, et al. Explanation of cyclic mobility of soils: approach by stress-induced anisotropy [J]. Soils and Foundations, 2007, 47(4):635-648. [15].YE G L, LENG J, JENG D S. Numerical testing on wave-induced seabed liquefaction with a poro- elastoplastic model[J]. Soil Dynamics and Earthquake Engineering, 2018, 105:150-159. [16].MARTI J, CUNDALL P. Mixed discretization procedure for accurate modelling of plastic collapse[J]. Inter- national Journal for Numerical and Analytical Methods in Geomechanics, 1982, 6(1):129-139. [17].WOOD D M, BELKHEIR K. Strain softening and state parameter for sand modelling[J]. Géotechnique, 1994, 44(2):335-339. [18].凌道盛, 李奖, 王文军, 等. 人工制备土的结构性及其对应变局部化的影响[J]. 浙江大学学报(工学版), 2019, 53(9):1689-1696. [19].ASAOKA A, NAKANO M, NODA T, et al. Delayed compression/consolidation of natural clay due to degradation of soil structure[J]. Soils and Foundations, 2000, 40(3):75-85. [20].YE G L, YE B. Investigation of the overconsolidation and structural behavior of Shanghai clays by element testing and constitutive modeling[J]. Underground Space, 2016, 1(1):62-77. [21].ZHANG F, JIN Y, YE B. A try to give a unified description of toyoura sand[J]. Soils and Foundations, 2010, 50(5):679-693. |
| 备注/Memo: | 收稿日期: 2023−07−31. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 宁波大学冲击与安全工程教育部重点实验室开放基金（CJ-20180110）. 第一作者: 邢嘉豪, 硕士研究生, 主要研究方向: 岩土材料本构模型及数值分析. E-mail: 1018911822@qq.com *通信作者: 熊勇林, 博士/副教授, 主要研究方向: 岩土材料本构模型及数值分析等. E-mail: xiongyonglin@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
