scholarly journals Design and Analysis of a Dynamic Loading System for a Morphing Winglet

Author(s):  
Raffi Buchkazanian

The following thesis paper investigates the possible methods to perform a dynamic load test on a morphing winglet. A morphing winglet design capable of deflecting in the cant direction was developed by a joint partnership between Ryerson University and Bombardier Aerospace. In order to validate the model and complete a proof of concept, a loading fixture was required to test the structural integrity of the winglet under a defined load. Upon completion of an enumeration study of planar four-bar linkages, a passive R-P-R-P mechanism was designed to apply a constant perpendicular load throughout the cant motion. A design of the half size loading fixture was developed, optimized and manufactured to integrate with an existing cant module. The dynamic loading model was validated by producing a positive correlation between the theoretical analysis and the experimental results, leading to a successful proof of concept for a full scale test.

2021 ◽  
Author(s):  
Raffi Buchkazanian

The following thesis paper investigates the possible methods to perform a dynamic load test on a morphing winglet. A morphing winglet design capable of deflecting in the cant direction was developed by a joint partnership between Ryerson University and Bombardier Aerospace. In order to validate the model and complete a proof of concept, a loading fixture was required to test the structural integrity of the winglet under a defined load. Upon completion of an enumeration study of planar four-bar linkages, a passive R-P-R-P mechanism was designed to apply a constant perpendicular load throughout the cant motion. A design of the half size loading fixture was developed, optimized and manufactured to integrate with an existing cant module. The dynamic loading model was validated by producing a positive correlation between the theoretical analysis and the experimental results, leading to a successful proof of concept for a full scale test.


1974 ◽  
Vol 1974 (136) ◽  
pp. 385-398
Author(s):  
Shinkichi Tashiro ◽  
Akira Nitta ◽  
Keisuke Enomoto ◽  
Shigeru Koshikawa ◽  
Kunio Kawasaki ◽  
...  

2017 ◽  
Vol 726 ◽  
pp. 13-17 ◽  
Author(s):  
Dong Wang ◽  
Chen Guang Wei

The front cover of solar photovoltaic modules is mostly made of 3.2mm, 2mm or thinner glass. When under wind or other dynamic loading stress, the performance of the PV modules might be affected. This article analyzed data of dynamic load test on several different types of PV modules, and got the conclusion that the dynamic load stress could harm the string ribbon or interior circuits of the PV modules, and would therefore lead to capacity reduction and less insulation.


1973 ◽  
Vol 1973 (133) ◽  
pp. 167-177
Author(s):  
Shinkichi Tashiro ◽  
Akira Nitta ◽  
Noriyoshi Onizuka ◽  
Yasunosuke Ogawa ◽  
Tetsuyo Miyamoto ◽  
...  

Author(s):  
Martin van Onna ◽  
Jens de Kanter ◽  
Bart Steuten

This paper describes the development and proof of concept of a full thermoplastic composite riser (TCR) system. The pipe design, consisting of a fully bonded composite wall, built up from melt-fused thermoplastic compound and fibres, will be discussed including fibre directions and end-fitting design. The proof of concept is executed through a comprehensive, global design approach, in which the pipe design is optimized with input from dynamic riser response analysis as well as installation aspects, for 7 different scenario’s. As part of the proof of concept, various single and combined load case testing have been conducted on full scale test specimen; the initial results of which are discussed in the paper. Finally, the approach to successfully achieve market adoption of such a safety critical component will be presented, including the qualification methodology.


2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Cheng Hu ◽  
Xingzhong Weng ◽  
Cong Liu ◽  
Le Jiang ◽  
Junzhong Liu ◽  
...  

Urgent repair and construction of airstrips is a research hotspot in global airport engineering. Selecting the proper structural materials is a key component of the airstrip repair process. First, with unconfined compressive strength and splitting tensile strength, the fiber length and content of polypropylene (PP) fiber-reinforced solidified soil were optimized. Then, using a scanning electron microscope, the reinforcing mechanism of PP fiber on soil and the influence mechanism of fiber parameters on fiber-reinforced soil were discussed and analyzed. Lastly, a full-scale test section was paved, on which static and dynamic loading tests were performed to verify the carrying capacity and deformation characteristics of the full-scale test section. The above research provides a theoretical foundation and data support for the urgent repair and construction of airstrip. Results indicate that PP fiber with length of 12 mm and fiber content of 0.3% has optimal performance and economic cost. The reinforcing mechanism of fiber-reinforced soil can be summarized to be the effect of a one-dimensional lacing wire and the effect of a three-dimensional network structure. Fibers show two failure modes of pull-out and tensile failure. After 20000 dynamic loading cycles, the stress at the bottom of each structural section varies less, the graded plastic deformation is stable, and the cumulative plastic deformations of the fiber-reinforced soil base, solidified soil base, and cemented soil base pavement structures are 0.83 mm, 0.93 mm, and 1.2 mm, respectively. Pavement structure composed of fiber-reinforced solidified soil can meet the load capacity requirements for use in airstrips under the characteristics of time-sensitive application.


1994 ◽  
Vol 1 (1) ◽  
pp. 77-83
Author(s):  
Yoshiji Moro ◽  
Tomoo Fujita ◽  
Takeshi Kanno ◽  
Akira Kobayashi

2019 ◽  
Vol 18 (1) ◽  
pp. 76-80 ◽  
Author(s):  
Kichul Kim ◽  
Pil-Ju Park ◽  
Soomi Eo ◽  
Seungmi Kwon ◽  
Kwangrae Kim ◽  
...  

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