Influence of pulse loading shape on dynamic response of blast wall connectors

部位	t/mm	ρ/(kg∙m⁻³)	E/GPa	σ_Y/MPa	Cowper–Symonds系数
部位	t/mm	ρ/(kg∙m⁻³)	E/GPa	σ_Y/MPa	C/s⁻¹	q
波纹板	2	7 980	200	293.7	1 522.0	5.13
刚性角钢	4	7 980	200	283.3	2 720.0	5.78
柔性角钢	3	7 980	200	276.2	429.0	4.08
工字型钢	12	7 980	205	235.0	40.4	5.00

Table 2. The load distribution formula

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Table 2. The load distribution formula

载荷类型	载荷分布函数f(t)
三角	$\left\{\begin{aligned} &{P}_{\mathrm{max} }\cdot (t/{t}_{\rm{r} })，&0\le t\le {t}_{\rm{r} }\\& {P}_{\mathrm{max} }\cdot \left[({t}_{\rm{d} }-t)/({t}_{\rm{d} }-{t}_{\rm{r} })\right]，&{t}_{\rm{r} } < t\le {t}_{\rm{d} }\end{aligned}\right.$
渐加	$\left\{\begin{aligned} &{P}_{\mathrm{max} }\cdot (t/{t}_{\rm{r} })，&\;\;\;\;\qquad\qquad 0\le t\le {t}_{r}\\& {P}_{\mathrm{max} }，&\;\;\;\;\qquad\qquad{t}_{\rm{r} } < t\le {t}_{\rm{d} }\end{aligned}\right.$
线性衰减	${P_{\max } } \cdot { {({t_{\rm{d}}} - t)} \mathord{\left/ {\vphantom { {({t_{\rm{d}}} - t)} { {t_{\rm{d}}} } } } \right. } { {t_{\rm{d}}} } }$
矩形	$ {P_{\max }} $

Table 3. Different pulse load operating conditions

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Table 3. Different pulse load operating conditions

载荷形状	载荷峰值P_max/bar	压力上升时间t_r/ms	压力持续时间t_d/ms
三角脉冲载荷（Case 1）	0.4	75.0	150.0
	0.6	50.0	100.0
	0.8	37.5	75.0
	1.0	30.0	60.0
渐加脉冲载荷（Case 2）	0.4	75.0	112.5
	0.6	50.0	75.0
	0.8	37.5	56.3
	1.0	30.0	45.0
线性衰减脉冲载荷（Case 3）	0.4	−	150.0
	0.6	−	100.0
	0.8	−	75.0
	1.0	−	60.0
矩形脉冲载荷（Case 4）	0.4	−	75.0
	0.6	−	50.0
	0.8	−	37.5
	1.0	−	30.0

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Anqi BIAN, Chunbao LI, Wei CHAI. Influence of pulse loading shape on dynamic response of blast wall connectors[J]. Chinese Journal of Ship Research, 2023, 18(6): 177

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Paper Information

Category: Ship Structure and Fittings

Received: Sep. 28, 2022

Accepted: --

Published Online: Mar. 21, 2025

The Author Email:

DOI:10.19693/j.issn.1673-3185.03110

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology