Browse > Article
http://dx.doi.org/10.7734/COSEIK.2019.32.5.333

Impact Tests and Numerical Simulations of Sandwich Concrete Panels for Modular Outer Shell of LNG Tank  

Lee, Gye-Hee (Department of Ocean Civil Engineering, Mokpo National Maritime University)
Kim, Eun (System Safety Lab., Korea Shipbuilding & Offshore Engineering Co.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.32, no.5, 2019 , pp. 333-340 More about this Journal
Abstract
Tests using a middle velocity propulsion impact machine (MVPIM) were performed to verify the impact resistance capability of sandwich concrete panels (SCP) in a modular liquefied natural gas (LNG) outer tank, and numerical models were constructed and analyzed. $2{\times}2m$ specimens with plain sectional characteristics and specimens including a joint section were used. A 51 kg missile was accelerated above 45 m/s and impacted to have the design code kinetic energy. Impact tests were performed twice according to the design code and once for the doubled impact speed. The numerical models for simulating impact behaviors were created by LS-DYNA. The external steel plate and filled concrete of the panel were modeled as solid elements, the studs as beam elements, and the steel plates as elasto-plastic material with fractures; the CSCM material model was used for concrete. The front plate deformations demonstrated good agreement with those of other tests. However the rear plate deformations were less. In the doubled speed test for the plain section specimen, the missile punctured both plates; however, the front plate was only fractured in the numerical analysis. The impact energy of the missile was transferred to the filled concrete in the numerical analysis.
Keywords
outer tank of LNG storage; sandwich concrete panel; impact test; nonlinear dynamic impact analysis; dissipation of impact energy;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Lee, G.H. (2017) Collision Behaviors Analysis of Sandwich Concrete Panel for Outer Shell of LNG Tank, J. Comput. Struct. Eng. Inst. Korea, 30(6), pp.485-493.   DOI
2 Livermore Software Technology Corporation (LSTC) (2017) LS-DYNA User's Manual Ver. R10.1.
3 OECD (2014) Improving Robustness Assessment Methodologies for Structures Impacted by Missiles (IRIS2012) :Final Report, OECD.
4 Sadiq, M., Yun, Z.X., Rong, P. (2014) Simulation Analysis of Impact Tests of Steel Plate Reinforced Concrete and Reinforced Concrete Slabs Against Aircraft Impact and Its Validation with Experimental Results, Nucl. Eng. & Des., 273(1), pp.653-667.   DOI
5 Seoul National University (2018) Extreme Performance Testing Center (EPTC), Brochure for Extreme Performance Testing Center (EPTC), http://www.koced.or.kr.
6 Sohel, M.A., Liew, Y.R. (2014) Behavior of Steel-Concrete-Steel Sandwich Slabs Subject to Impact Load, J. Constr. Steel Res., 100, pp.163-175.   DOI
7 Thai, D.K., Kim, S.E. (2015) Failure Analysis of UHPFRC Panels Subjected to Aircraft Engine Model Impact, Eng. Fail. Anal., 57, pp.88-104.   DOI
8 Hyundai Heavy Industry(HHI) (2015) General Approval of 60K HMLST, Structure Research Dep. HHI.
9 European Committee for Standardization(CEN) (2006) Design and Manufacture of Site Built, Vertical, Cylindrical, Flat-Bottomed Steel Tanks for the Storage of Refrigerated, Liquefied Gases with Operating Temperatures between $0^{\circ}C$ and $-165^{\circ}C$. General, BS EN 14620-1:2006.
10 Extreme Performance Testing Center(EPTC) (2019) Report of SCP Impact Test using Middle Velocity Propulsion Impact Machine.
11 Jiang, H., Chorzepa, M.G. (2014) Aircraft Impact Analysis of Nuclear Safety-Related Concrete Structures: A Review, Eng. Fail. Anal., 46, pp.118-133.   DOI