Transient energy flow in ship plate and shell structures under low velocity impact

Liu, Z.S.; Swaddiwudhipong, S.; Lu, C.; Hua, Jian

doi:10.12989/sem.2005.20.4.451

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…The parameters are taken as E = 2.1 × 10 11 , v = 0.3 and P = 100. The analytical solution for the stresses of the circle (Liu et al 2005) is given by…”

Section: Unit Circle Under Concentrated Forcementioning

confidence: 99%

See 1 more Smart Citation

Complex differential quadrature method for two-dimensional potential and plane elastic problems

Zhang¹,

Zong²,

Liu³

2007

Ships and Offshore Structures

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In this article, complex differential quadrature method based on differential quadrature method in the real domain is proposed for potential and plane elastic problems. By use of Lagrange interpolation in the complex plane instead of boundary integral formulation, the method is free of singularity. The use of collocation ensures that the boundary conditions are exactly satisfied on the boundary. The method is applied to some potential and plane elastic problems. Numerical results obtained by the present method are in good agreement with either analytical solutions or finite element results.

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“…The parameters are taken as E = 2.1 × 10 11 , v = 0.3 and P = 100. The analytical solution for the stresses of the circle (Liu et al 2005) is given by…”

Section: Unit Circle Under Concentrated Forcementioning

confidence: 99%

“…Another one is to use an alternative high-order accurate numerical method, among which is differential quadrature method (DQM). Recently, Liu et al (2005) applied DQM to analyze energy flow in ship plate and shell structures.…”

Section: Introductionmentioning

confidence: 99%

Complex differential quadrature method for two-dimensional potential and plane elastic problems

Zhang¹,

Zong²,

Liu³

2007

Ships and Offshore Structures

View full text Add to dashboard Cite

show abstract

“…Impact scenarios vary in scale from rockfalls [Hambleton et al, 2013] to the showering of storm debris onto building façades [Feng and Aymerich, 2013;Guo et al, 2013;Pyttel et al, 2011]. Large amount of impact related research has also been conducted in the field of bio-medical engineering (e.g., modeling of head injuries [Gong et al, 2008;Johnson and Young, 2005;Kerrigan et al, 2012;Zhang et al, 2001] and in research into damage to metal materials [Liu et al, 2005a;Liu et al, 2005b], composite materials [Khalili et al, 2011;Maio et al, 2013;Zhang et al, 2006], and to bone tissues [Delye et al, 2007;Yamashita and Gotoh, 2005].…”

Section: Introductionmentioning

confidence: 99%

An Innovative Procedure for Estimating Contact Force During Impact

Yang

Sun

Lam

et al. 2014

Int. J. Appl. Mechanics

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Certain types of damage generated by the impact of a solid object are correlated with the amount of force that is localized around the area of contact between the impactor and the surface of the target. The stiffer the impactor, the higher the contact force when the amount of impulse delivered by the impact is held constant. Thus, realistic simulations of the contact force by finite element analysis (FEA) require representative, and detailed, information of the dynamic compressive properties of both the impactor and the target. In situations where relevant properties of the impactor material have not been documented, the estimation of contact force is filled with uncertainties. In addressing this challenge an innovative experimental-simulation calibration procedure involving the use of a custom made (inexpensive) tubular device is presented in this paper for measuring the dynamic compressive stiffness properties of impactor objects. Given the calibrated values the amount of contact force generated by the same impactor material in projected scenarios could be simulated with good accuracies for predicting damage.

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Vibration control for slotted plate using structural intensity method

Huang

Vengatachalam

2018

Int. J. Comp. Mat. Sci. Eng.

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In this paper, we study the vibration performance of simply supported slotted plate using structural intensity (SI) method. First, the SI distribution of the slotted plate under given excitation for different slot depths is obtained using finite element methods. The SI streamline of each case shows that the SI distribution can be significantly affected by adjusting the slot depth. The optimal position of dampers which can effectively implement vibration control of slotted plate for the fixed value of exciting frequency can be obtained from the SI streamline distribution. In case of changing vibrating frequencies, a new strategy of vibration control by adding soft material (hydrogel) layers is proposed. The main advantage of this strategy is that the properties of hydrogel can be easily adjusted by changing the chemical potential, thereby achieving the desired vibration control for different excitation conditions. The effectiveness of the proposed vibration control using hydrogel layers is investigated using SI method. The SI distribution and SI streamlines of the slotted plate with the new vibration control show that the proposed strategy is convenient. Our proposed method conceptualizes a new approach toward vibration control using constrained hydrogel layer.

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Transient energy flow in ship plate and shell structures under low velocity impact

Cited by 4 publications

References 12 publications

Complex differential quadrature method for two-dimensional potential and plane elastic problems

Complex differential quadrature method for two-dimensional potential and plane elastic problems

An Innovative Procedure for Estimating Contact Force During Impact

Vibration control for slotted plate using structural intensity method

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