Zobrazeno 1 - 10
of 338
pro vyhledávání: '"DONG JunHua"'
Publikováno v:
Jixie qiangdu, Vol 43, Pp 453-458 (2021)
With the aid of applying decomposed loads,a method is suggested to construct primary structure and obtain the primary bending stress for the tubesheet of fixed tubesheet heat exchanger. The favorable redundant rotation constraint of the cylinder to t
Externí odkaz:
https://doaj.org/article/0fe915c990564a2b925244d4e2705844
Publikováno v:
Jixie qiangdu, Vol 42, Pp 1067-1073 (2020)
Taking advantage of the EUM-25 K20 tension-torsion fatigue testing machine by CARE,the cryogenic uniaxial ratcheting tests were carried out for the S30408 specimens with and without weld,and with 0%,8%,and 12% pre-strains at110 K. It is shown that ra
Externí odkaz:
https://doaj.org/article/ec1b06375a9d4662bb44e8fb953b4001
Publikováno v:
Phys. Rev. B 110, L100306 (2024)
Lorentzian-type media support optical phonons that oscillate with longitudinal polarization parallel to the wave direction, at a wave vector-independent frequency at which the permittivity becomes zero. Here, we study the interactions between the lon
Externí odkaz:
http://arxiv.org/abs/2407.04502
Publikováno v:
Jixie qiangdu, Vol 41, Pp 196-201 (2019)
In this article,fatigue crack growth（ FCG） experiments were conducted on cracked round bar（ CRB）specimens manufactured from PE100 pipes at different R-ratios. In addition, these experimental data were employed in extrapolating to the case of
Externí odkaz:
https://doaj.org/article/127f94d7ea7b45d69807693aebe1e877
Photonic time crystals (PTCs) host momentum bandgaps enabling intriguing non-resonant light amplification in propagating waves, but opening substantial bandgaps demands refractive index changes too extreme for conventional nonlinear optics. Here, we
Externí odkaz:
http://arxiv.org/abs/2404.08206
Publikováno v:
Jixie qiangdu, Vol 40, Pp 1431-1436 (2018)
As enormous number of tubes in large fixed tubesheet heat exchangers, it is difficult to model all the tubes and tubesheet connections in detail for FEA. Therefore, it fails to yield an accurate stress field around the connecting region of tubes and
Externí odkaz:
https://doaj.org/article/1a10ca133a8442a1a07c8a4fe0a640f6
Publikováno v:
Jixie qiangdu, Vol 38, Pp 703-710 (2016)
Butt-weld specimen has been made for coke drum material 15 Cr MoR. For both parent and weld materials,uniaxial tensile tests and uniaxial ratcheting tests have been conducted under different temperatures. The OW-II kinematic hardening constitutive mo
Externí odkaz:
https://doaj.org/article/bfc709bbb0eb44569603216b908dbf89
Publikováno v:
Jixie qiangdu, Vol 38, Pp 811-815 (2016)
Some external pressurized thin walled cylindrical shells could only be stiffened by small stiffening rings due to structural limitations. Such stiffening rings can only partially stiffen the cylinder which is less effective than big stiffening rings.
Externí odkaz:
https://doaj.org/article/1fc8e9d873374bb18e31ca90c5aed2ca
Autor:
Chen, Lei a, b, Ma, Rongyao a, b, ⁎, Dong, Junhua a, b, ⁎, Chen, Shaofeng c, Li, Chao b, Ma, Chaojiang a, b, Bian, Guixue d, Wang, Changgang a, b, ⁎
Publikováno v:
In Corrosion Science October 2024 239
Autor:
Shen, Yufeng a, b, Ma, Rongyao b, Wei, Jie b, Wang, Changgang b, Dong, Junhua a, b, ⁎, Xu, Dake c, d, ⁎⁎
Publikováno v:
In Corrosion Science 15 July 2024 235