Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference
Shanghai, China, June 5–10, 2022
Copyright © 2022 by the International Society of Offshore and Polar Engineers (ISOPE)
ISBN 978-1-880653-81-4; ISSN 1098-6189

www.isope.org

Ship Design Model of Fire-Resisting Divisions Using 3DExperience User-defined Feature
Jinlong Li, Xunhai Gao, Sihao Xu, Dongming He
Marine Design & Research Institute of China
Shanghai, China

ABSTRACTefficiency of the design work.

Fire safety is important to maritime safety. Fire-resisting divisions arethe essential part of fire safety, and it aims to contain the fire in the spaceof origin. The design work is to compute fire integrities of boundary
bulkheads and decks according to space fire risks in order to subdivide aship by appropriately thermal and structural divisions. A 3D model offire-resisting divisions is proposed to digitalize the design work in
3DExperience, and user-defined feature is introduced to integrate design
knowledge. The accuracy of designed fire integrities can be guaranteed,
and artificial omissions under duplication effort can be avoided.

This paper proposes a novel design model of fire-resisting division in3DExperience which is an excellent 3D platform of Dassault company
for the engineering. User-defined feature (UDF) is introduced tointegrate the core computations of fire integrities by using knowledge
engineering, and UDF can be iteratively called to obtain fire integritiesof thermal and structural boundaries in the whole ship

PROBLEM DESCRIPTIONIn the design work of fire-resisting divisions, fire integrities of thedivisions between adjacent spaces need to be computed according to firerisks of the spaces. The computations are carried out according to themapping rules in the regulations, such as international convention for thesafety of life at sea (SOLAS). In SOLAS, the ships are categorized into
three types: passenger ships, cargo ships except tankers and tankers.
Each type of ship has its own mapping rules to compute fire integritiesof the divisions.

KEY WORDS: Fire-resisting divisions; user-defined feature;digitalization; fire integrity.

INTRODUCTION
Fire safety design is an important part of ship designs. Fire safety design
can reduce the risk to life, and it can also reduce the risks of damage toships, the cargo and the environment (Said, 1995; Wang, 2021). Fire
safety systems consist of fire detection & alarm system, containment offire and fire extinction system, etc. The containment of fire aims tocontain the fire in the space of origin, which is very important to limit
the spread of the danger caused by fire.

Generally speaking, a division between horizontally adjacent spaces isthe boundary bulkhead, and a division between vertically adjacent spaces
is the boundary deck. In the iterative design process of a ship, fire
integrity computations are very heavy, especially for the large ship. The
computations of fire integrities involve a large number of repeatedartificial operations which are tedious for designers. Careless omissions
would be impossible to avoid if the design process of fire-resisting
divisions were not digitalized. In order to satisfy the stringent
requirements of fire safety, the computations of fire integrities should bereliable, accurate and automatic.

Ships of all types shall be subdivided into spaces by thermal andstructural divisions which have fire integrities according to fire risks ofadjacent spaces (LaMalva, 2018; Hugosson, 2011). Different types offire protection materials, including the insulation and deck covering, areattached to the bulkheads and decks based on the corresponding fireintegrities (Asaro, 2009; Lee, 2006; Evegren, 2017). The appropriate fire
integrities contribute to maintain structural integrity under threaten
caused by the fire. Besides, the fire integrity of the divisions shall bemaintained at the openings and penetrations. The design of the door,
hatch cover and penetrating pieces should take the fire integrity intoaccount. The computations of fire integrities are the core work of fireresisting division design, and the computations involve heavily repeated
operations in the design process, especially for large ships. Digitalizationof the design work provides the opportunity to enhance the quality andDESIGN MODEL
The framework of design model
The design model for fire-resisting divisions belongs to the 3D modelutilization part of 3D digital general design of a ship. As shown in Fig.1,
3D digital general design of a ship can be divided into three parts: 3Dmodeling, design information assignment and 3D model utilization. 3D3361