Finite element investigation of fatigue performance of CFRP-strengthened beams in hygrothermal environments

2020 ◽  
Vol 234 ◽  
pp. 111676 ◽  
Author(s):  
Y.L. Wang ◽  
X.Y. Guo ◽  
P.Y. Huang ◽  
K.N. Huang ◽  
Y. Yang ◽  
...  
Keyword(s):  
Finite Element ◽  
Fatigue Performance ◽  
Hygrothermal Environments

Experimental and finite element analysis of fatigue performance of copper power conductors

2013 ◽  
Vol 47 ◽  
pp. 244-258 ◽  
Author(s):  
Fachri P. Nasution ◽  
Svein Sævik ◽  
Janne K.Ø. Gjøsteen ◽  
Stig Berge
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Performance ◽  
Element Analysis

scholarly journals Fatigue Life Assessment of Revised Cope-Hole Details in Steel Truss Bridges

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1092
Author(s):  
Ping Liao ◽  
Bing Qu ◽  
Yaolong Huang ◽  
Yi Jia ◽  
Yongbao Wang ◽  
...  
Keyword(s):  
Finite Element ◽  
Stress Amplitude ◽  
Fatigue Loading ◽  
Fatigue Performance ◽  
Life Assessment ◽  
Element Analysis ◽  
Truss Bridges ◽  
Steel Truss ◽  
Cope Hole ◽  
Steel Truss Bridges

In recent years, various welded details with complex local structure, ambiguous fatigue performance have appeared in fully welded steel truss bridges, however, they are not covered in the current design specifications. In order to study the fatigue performance of revised cope-hole details, fatigue performance experiments were designed and carried out on three specimens of revised detail with the same dimensions but subjected to different stress amplitude. Local finite element model of the revised cope-hole detail was established for further stress analysis. The results of finite element analysis were basically consistent with the static test results at majority of measurement points. Based on the existing fatigue test data and fatigue strength of cope-hole details defined in Eurocode and JSSC design code, the fatigue performance of revised cope-hole details was evaluated. The S-N fitting curve with the failure probability of 2.3% was obtained from the fatigue experiment results. The fatigue stress amplitude was 59.5 MPa when fatigue loading cycle was 2 × 106. It can be concluded that the fatigue performance of revised cope-hole detail was better than that of previous welded detail, which indicated that the revised detail had a significant improvement.

Effect of Die Angle on Electromagnetic Riveting Interference

2012 ◽  
Vol 217-219 ◽  
pp. 1968-1971
Author(s):  
Qi Liang Zhang ◽  
Zeng Qiang Cao ◽  
Yun Quan Chen
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Contact Pressure ◽  
Element Model ◽  
Fatigue Performance ◽  
Adiabatic Shearing ◽  
Electromagnetic Riveting

By establishing an axisymmetric finite element model of the electromagnetic riveting (EMR) joint, we studied the influence of riveting die angle on joint interference and the driven head. It was found that a decrease in the die angle leads to a decrease in the highest temprature in the adiabatic shearing band (ASB). An increase in interference and contact pressure between the rivet shank and apertue wall was also obeserved when decreasing the die angle, which has been proved to be benificial to the fatigue performance of the joint.

scholarly journals Effect of Riveting Angle and Direction on Fatigue Performance of Riveted Lap Joints

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 236
Author(s):  
Qingxiao Liang ◽  
Tianpeng Zhang ◽  
Chunrun Zhu ◽  
Yunbo Bi
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Finite Element Model ◽  
Three Dimensional ◽  
Element Model ◽  
Fatigue Tests ◽  
Lap Joints ◽  
Fatigue Performance ◽  
Riveting Process ◽  
Three Dimensional Finite Element

Riveting is the most commonly used connection method in aircraft assembly, and its quality has a crucial effect on the fatigue performance of aircraft. Many factors affect the riveting quality, among which the influence of the riveting angle and direction is not clear. In this paper, a three-dimensional finite element model of single-rivet lap joints is established and verified by the driven head geometry and the riveting force data obtained from the riveting experiments. Then, by adjusting the angle and direction of the punch in the finite element model, the riveting process is simulated at the angles of 0°, 1°, 2°, and 3° and the directions of 0° and 180° to investigate the deformation of the lap joints, the stress distribution around the hole, and the stress distribution of the rivet. Finally, the fatigue tests of the single-rivet lap joints are performed and the influence of the riveting angle and direction on the connection quality and fatigue performance of the riveting joints is analyzed.

Effect of delamination on the nonlinear transient response of composite shells in hygrothermal environments

2010 ◽  
Vol 1 (3) ◽  
pp. 259-279 ◽  
Author(s):  
Namita Nanda ◽  
S.K. Sahu ◽  
J.N. Bandyopadhyay
Keyword(s):  
Finite Element ◽  
Transient Response ◽  
Shear Deformation Theory ◽  
Future Research ◽  
Composite Shells ◽  
Content Type ◽  
Nonlinear Transient ◽  
Hygrothermal Environments ◽  
Nonlinear Forced Vibration ◽  
Nonlinear Transient Response

PurposeThe purpose of this paper is to study the nonlinear forced vibration response of delaminated composite shells in hygrothermal environments.Design/methodology/approachFinite element method using an eight‐noded C0 continuity, isoparametric quadrilateral element is employed. The theoretical formulations are based on the first‐order shear deformation theory and von Kármán type nonlinear kinematics. For modeling the delamination, multipoint constraint algorithm is incorporated in the finite element code.FindingsThe paper finds that the effect of presence of delaminations on the nonlinear transient response of composite shells is dependent not only on the size, but also on the location of the delaminations and the hygrothermal environments.Research limitations/implicationsThe present study is limited to cylindrical and spherical shells having rectangular planform containing single delamination. Studies on different shell forms having non‐rectangular planforms containing multiple delaminations can be taken up for future research.Originality/valueThe value in this paper lies in that nonlinear transient response of delaminated shells in hygrothermal environments is studied for the first time. It will assist researchers of nonlinear dynamic behavior of elastic systems.

Experimental and finite element analysis research on the fatigue performance of CHS K-joints

2019 ◽  
Vol 197 ◽  
pp. 109365
Author(s):  
Kangming Chen ◽  
Hanhui Huang ◽  
Qingxiong Wu ◽  
Shozo Nakamura ◽  
Baochun Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Performance ◽  
Element Analysis
Sign in / Sign up

Export Citation Format

Share Document