Approximate solutions of finite dynamic spherical cavity-expansion models for penetration into elastically confined concrete targets

Meng, Chaomei; Tan, Qing-Hua; Jiang, Zhigang; Song, Derui; Liu, Fei

doi:10.1016/j.ijimpeng.2018.01.001

Cited by 16 publications

(23 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[4], the calculated results with m ranged between 6 and 8 agree well with the test results, i.e., the value of m in Ref. [31] is lower than the recommended values. The reason is that under conditions that there is no coarse aggregate within concrete of the targets in Ref.…”

Section: Introductionsupporting

confidence: 70%

“…Like the dynamic FSCE approximation model for confined concrete targets proposed by Meng et al [31], some assumptions are further employed to establish the dynamic FCCE approximation model for STCC targets.…”

Section: Simplification Of Penetration Problemsmentioning

confidence: 99%

“…By ignoring the compressibility and strain-softening of concrete, the cavity-expansion pressure would be overestimated; and if shear dilatancy, strain-rate, strain-hardening of concrete are not included, the cavity-expansion pressure would be underestimated. Therefore, under low and medium penetration velocity, the above effects of concrete material generally offset each other, which indicates the incompressible material assumption of target concrete is reasonable [31][32][33]. Additionally, incompressible material assumption excludes the effect of stress wave and thus greatly simplifies the problem with possible analytical solutions.…”

Section: Simplification Of Penetration Problemsmentioning

confidence: 99%

“…Zhen et al [26] established a finite cylindrical cavity-expansion (FCCE) approximation model for perfect elastic-plastic compressible and incompressible materials with the inclusion of the influence of the lateral free boundary. On the basis of assumptions of incompressible material and the Modified-Griffith criterion [27,28], which shows the same form with the Hoek-Brown criterion [29,30], Meng et al [31] proposed a dynamic FSCE approximation model and DOP model for confined concrete targets normally impacted by rigid projectile. The results showed that under high confinement, the empirical constant m in the Modified-Griffith criterion was recommended to be above 15 on the basis of triaxial experiments.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Depth of penetration of steel-tube-confined concrete targets based on dynamic finite cylindrical cavity-expansion models

et al. 2020

Self Cite

View full text Add to dashboard Cite

Steel-tube-confined concrete (STCC) targets show excellent anti-penetration performance as a result of confinement effect of steel tube on in-filled concrete. A dynamic finite cylindrical cavity-expansion (FCCE) model with elastic radial spring was developed to analyze the confinement effect and predict the depth of penetration (DOP) of STCC targets normally penetrated by rigid sharp-nosed projectiles. Firstly, steady responses of the dynamic FCCE approximation model were obtained on the basis of the assumption of incompressibility of target concrete and failure of comminuted zone with the Heok-Brown criterion. Then, based on the dynamic FCCE approximation model, a DOP model for STCC targets impacted by rigid projectiles was proposed. Lastly, the penetration tests of STCC targets normally penetrated by 12.7 mm armor piecing projectile (APP) were taken as examples to validate the applicability of the dynamic FCCE approximation model and DOP model. The results show that in comparisons with the results based on the dynamic spherical cavityexpansion (FSCE) model, the DOP model based on the dynamic FCCE model in this paper is more applicable to predict the DOP of STCC targets penetrated by rigid conical or other sharp-nosed projectiles with a proper value of empirical constant m in the Heok-Brown criterion.

show abstract

Section: Introductionsupporting

confidence: 70%

Section: Simplification Of Penetration Problemsmentioning

confidence: 99%

Section: Simplification Of Penetration Problemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Depth of penetration of steel-tube-confined concrete targets based on dynamic finite cylindrical cavity-expansion models

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…It seems that the spherical formulation is easier to understand and simpler to model because the number of variables can be reduced due to the symmetry of the spherical problem. For this reason, many applications can be recently found using this approach [28][29][30][31].…”

mentioning

confidence: 99%

Spherical Cavity Expansion Approach for the Study of Rigid-Penetrator’s Impact Problems

Buchely

Maranon

2020

Applied Mechanics

View full text Add to dashboard Cite

In recent years, Spherical Cavity Expansion (SCE) theory has been extensively utilized to model dynamic deformation processes related to indentation and penetration problems in many fields. In this review, the SCE theory is introduced by explaining the different mathematical features of this theory, its solution, and a potential application to model the penetration of a rigid penetrator into a deformable target. First, a chronologically literature review of the most common models used to study this kind of penetration problems is introduced, focusing on the SCE theory. Then, the engineering model of penetration is presented using the SCE approach. The model is then compared and validated with some FE numerical simulations and with previous penetration results. It is concluded that this engineering model based on the SCE theory can be utilized to predict the projectile deceleration and penetration depth into the semi-infinite and finite targets impacted by rigid penetrators.

show abstract

Cavity-expansion approximation for projectile impact and penetration into sand

Котов

Bragov

Balandin

et al. 2021

Continuum Mech. Thermodyn.

View full text Add to dashboard Cite

Approximate solutions of finite dynamic spherical cavity-expansion models for penetration into elastically confined concrete targets

Cited by 16 publications

References 42 publications

Depth of penetration of steel-tube-confined concrete targets based on dynamic finite cylindrical cavity-expansion models

Depth of penetration of steel-tube-confined concrete targets based on dynamic finite cylindrical cavity-expansion models

Spherical Cavity Expansion Approach for the Study of Rigid-Penetrator’s Impact Problems

Cavity-expansion approximation for projectile impact and penetration into sand

Contact Info

Product

Resources

About