Probabilistic strength analysis of rectangular FRP plates using Monte Carlo simulation

Jeong, Hyun Young; Shenoi, R.A.

doi:10.1016/s0045-7949(99)00171-6

Cited by 108 publications

(46 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…핏칭 기동시 미 익 구조에 가해지는 하중은 상부 스킨에 균일하게 작 용한다고 가정하였다. Table 2와 같다 [3,10] . RSM을 이용한 근사 모델 생성시 실험계획법은 MATLAB toolbox에서 PSA 기법을 이용한 민감도 해석 결과를 Table 5에 정리하였다.…”

Section: 라 Rsm(response Surfaceunclassified

The Reliability-Based Probabilistic Structural Analysis for the Composite Tail Plane Structures

Lee¹,

Kim²

2012

Journal of the Korea Institute of Military Science and Technolo

View full text Add to dashboard Cite

In this paper, the deterministic optimal design for the tail plane made of composite materials is conducted under the deterministic loading condition and compared with that of the metallic materials. Next, the reliability analysis with five random variables such as loading and material properties of unidirectional prepreg is conducted to examine the probability of failure for the deterministic optimal design results. The MATLAB programing is used for reliability analysis combined with FEA S/W(COMSOL) for structural analysis. The laminated composite is assumed to the equivalent orthotropic material using classical laminated plate theory. The response surface methodology and importance sampling technique are adopted to reduce computational cost with satisfying the accuracy in reliability analysis. As a result, structural weight of composite materials is lighter than that of metals in deterministic optimal design. However, the probability of failure for the deterministic optimal design of the tail plane structures is too high to be neglected. The sensitivity of each variable is also estimated using probabilistic sensitivity analysis to figure out which variables are sensitive to failure. The computational cost is considerably reduced when response surface methodology and importance sampling technique are used. The study of the computationally inexpensive method for reliability-based design optimization will be necessary in further work.

show abstract

Section: 라 Rsm(response Surfaceunclassified

The Reliability-Based Probabilistic Structural Analysis for the Composite Tail Plane Structures

Lee¹,

Kim²

2012

Journal of the Korea Institute of Military Science and Technolo

View full text Add to dashboard Cite

show abstract

“…As an example, when "capacity" and "load" are normally distributed then Some work has been done to date in the strength assessment of single skin [11,12] and sandwich structures [13] as well as fatigue and lifing of composite structures [14,15,16]. However, it is clear from these and other current studies that a variety of hypotheses about Shenoi / Composite Materials / 9 materials and structural modelling as well as believable materials data sets need to be challenged and new approaches developed.…”

Section: Shenoi / Composite Materials / 7 Safetymentioning

confidence: 99%

Composite Materials for Marine Applications: Key Challenges for the Future

Shenoi

Dulieu-Barton

Quinn

et al. 2011

Composite Materials

View full text Add to dashboard Cite

“…Due to the inherent variability of their micro-and meso-structural characteristics as a result of intrinsic scatter in raw material data and manufacturing processes, many composite materials exhibit considerable uncertainties in their macro-scale mechanical properties [10][11][12][13][14]. Cuong et al [15] showed that fibers friction coefficients have much effect on the ballistic performance of the interlock woven fabrics.…”

Section: Introductionmentioning

confidence: 99%

Effect of Yarn Distortion on the Mechanical Properties of Fiber-Bar Composites Reinforced by Three-Dimensional Weaving

et al. 2015

View full text Add to dashboard Cite

A meso-structure model of fiber-bar composites reinforced by three-dimensional weaving (FBCR3DW) is proposed. Optical microscopy images of the preform structure revealed that the fibers along the circumference of the yarn cross-weave were twisted randomly due to alternating yarn winding on either side of the fiber bars during the manufacturing process. Sections of the cross-woven yarn were divided into five regions based on the twist characteristics. Stochastic function theory was used to describe the twist characteristics and to calculate the compliance tensor for each twisted yarn region. The twist characteristics and compliance tensor of each region were then introduced into a finite element model to calculate the elastic properties of the twisted yarn and FBCR3DW; unidirectional tensile stress-strain curves were generated based on the Tsai-Wu failure criterion. Several FBCR3DW specimens with randomly twisted yarns inside the weave structure were used in experimental tests. Our numerical results were in good agreement with the experimental values. Yarn distortion had a significant effect on the elastic properties and axial tensile strength of the yarn; specifically, the influence of yarn distortion on the transverse elastic modulus and transverse shear modulus of FBCR3DW was severe, whereas only a slight effect occurred with regard to the other elastic Appl Compos Mater constants and unidirectional tensile properties. Thus, the proposed method provides an effective reference for modeling fiber composites with a weave structure.

show abstract

Probabilistic strength analysis of rectangular FRP plates using Monte Carlo simulation

Cited by 108 publications

References 9 publications

The Reliability-Based Probabilistic Structural Analysis for the Composite Tail Plane Structures

The Reliability-Based Probabilistic Structural Analysis for the Composite Tail Plane Structures

Composite Materials for Marine Applications: Key Challenges for the Future

Effect of Yarn Distortion on the Mechanical Properties of Fiber-Bar Composites Reinforced by Three-Dimensional Weaving

Contact Info

Product

Resources

About