船舶发动机消声器的抗冲击性能直接决定船舶发动机运行可靠性与航行安全性，传统台架冲击试验存在成本高、周期长、工况模拟不全面等局限性。本文以某型船用低速柴油机消声器为研究对象，采用动态设计分析方法（DDAM）开展抗冲击性能仿真研究，首先确定消声器核心结构与材料参数，构建适配DDAM仿真的有限元模型并完成网格划分，开展多冲击方向、多冲击强度下的瞬态响应仿真，分析消声器应力与位移分布规律，准确识别薄弱部位并探究其失效模式，同时对比消声器薄弱部位的位移响应差异，明确设计的优化方向。
The impact resistance of marine engine mufflers directly determines the operational reliability and navigation safety of marine engines. Traditional bench impact tests have limitations such as high cost, long test cycle, and incomplete working condition simulation. Taking a certain type of marine low-speed diesel engine muffler as the research object, this paper conducts simulation research on its impact resistance using the Dynamic Design Analysis Method (DDAM). Firstly, the core structure and material parameters of the muffler are determined, and a finite element model suitable for DDAM simulation is established and meshed. Then, transient response simulations under multiple impact directions and different impact intensities are carried out to analyze the stress and displacement distribution laws of the muffler, accurately identify the weak parts and explore their failure modes. Meanwhile, the differences in displacement responses of the weak parts of the muffler are compared to clarify the optimization direction of the design.
2026,48(8): 103-107 收稿日期：2025-10-24
DOI：10.3404/j.issn.1672-7649.2026.08.016
分类号：U664.121；TB535.2
作者简介：田云飞(1982-),男,硕士,讲师,研究方向为发动机检测与维修
参考文献：
[1] 云霞, 翟又文. 船用柴油机消声器抗冲击性能仿真研究[J]. 舰船科学技术, 2025, 47(24): 181-184 YUN X, ZHAI Y W. Simulation study on impact resistance of marine diesel engine muffler[J]. Ship Science and Technology, 2025, 47(24): 181-184
[2] 韩旭, 李泽朝, 朱洪波, 等. 考虑进油工况的航发主轴轴承外套圈抗冲击性能研究[J]. 摩擦学学报(中英文), 2025, 45(2): 210-222 HAN X, LI Z C, ZHU H B, et al. Study on impact resistance of aero-engine main shaft bearing outer ring considering oil feeding condition[J]. Tribology Transactions, 2025, 45(2): 210-222
[3] 李泽朝, 张浩, 解忠良, 等. 无进油工况下航空发动机主轴轴承抗冲击特性[J]. 润滑与密封, 2025, 50(11): 125-135 LI Z C, ZHANG H, XIE Z L, et al. Impact resistance characteristics of aero-engine main shaft bearing under non-oil feeding condition[J]. Lubrication Engineering, 2025, 50(11): 125-135
[4] 曹健, 孙锋, 申帅, 等. 基于DDAM的套筒式液压联轴器抗冲击性能及影响因素分析[J]. 舰船科学技术, 2023, 45(10): 51-57 CAO J, SUN F, SHEN S, et al. Analysis on impact resistance and influencing factors of sleeve hydraulic coupling based on DDAM[J]. Ship Science and Technology, 2023, 45(10): 51-57
[5] 汤传贵, 赵建华, 丁先威. 基于DDAM法的船用液体混合装置冲击响应仿真研究[J]. 中国设备工程, 2017(2): 114-115 TANG C G, ZHAO J H, DING X W. Simulation study on impact response of marine liquid mixing device based on DDAM[J]. China Equipment Engineering, 2017(2): 114-115
[6] 王茀凡, 赵华讯, 王爽, 等. 基于Kriging模型的船舶主机隔离系统抗冲击优化[J]. 哈尔滨工程大学学报, 2024, 45(7): 1266-1272 WANG F F, ZHAO H X, WANG S, et al. Impact resistance optimization of marine main engine isolation system based on Kriging model[J]. Journal of Harbin Engineering University, 2024, 45(7): 1266-1272
