The emergence of social manufacturing has facilitated the evolution of resource organization in the manufacturing industry, with a trend towards a flat management structure. The mass absorption of socialized idle resources that lack a digitalized and intelligent basis has influenced the efficiency of collaborative production. The digital twin has been widely applied to promote cyber collaboration through the multidimensional digitalization of physical resources. As a knowledge-intensive software entity, it is impractical for resource owners, especially individuals and small and micro businesses, to implement digital twins. To make sufficient use of the sharing convenience in the social manufacturing community (SMC), this paper proposes a blockchain-based digital twin sharing platform to enable software copyright protection and simplify heterogeneous manufacturing resource integration in decentralized and distributed environments. Domain-driven design is adopted as the major methodology to recognize the problem domain and partition the business subdomains. Blockchain technology is introduced to construct a novel sharing schema to preserve and retrieve the copyrights of digital twins under a distributed and decentralized SMC network. Furthermore, to enhance the reusability of digital twins, a reconfigurable digital twin architecture is proposed to enable UPnP implementation of shared digital twins under heterogeneous deployment environments. Finally, a demonstrative case study motivated by a real-life 3D printing scenario is conducted to verify and evaluate the proposed platform.

社会制造的出现促进了制造业资源组织的演变，管理结构趋于扁平化。缺乏数字化、智能化基础的社会化闲置资源的大量吸纳，影响了协同生产的效率。数字孪生已被广泛应用于通过物理资源的多维数字化促进网络协作。作为知识密集型软件实体，资源所有者，尤其是个人和小微企业，实施数字孪生是不切实际的。充分利用社会制造社区（SMC）的共享便利，本文提出了一个基于区块链的数字孪生共享平台，以实现软件版权保护并简化分散和分布式环境中的异构制造资源集成。采用领域驱动设计作为识别问题域和划分业务子域的主要方法。引入区块链技术构建一种新颖的共享模式，以在分布式和去中心化的 SMC 网络下保存和检索数字孪生的版权。此外，为了提高数字孪生的可重用性，提出了一种可重构的数字孪生架构，以支持异构部署环境下共享数字孪生的 UPnP 实现。最后，