摘要：During a hypothetical severe accident of light water reactors,the reactor pressure vessel(RPV) could fail due to its creep under the influence of high-temperature ***,modelling of creep behavior of the RPV is paramount to reactor safety analysis since it predicts the transition point of accident progression from in-vessel to ex-vessel *** the present study we proposed a new creep model for the classical French RPV steel 16 MND5,which is adapted from the "theta-projection model" and contains all three stages of a creep *** curves are expressed as a function of time with five model parameters θ_i(i=1-4 and m).A model parameter dataset was constructed by fitting experimental creep curves into this *** correlate the creep curves for different temperatures and stress loads,we directly interpolate the model’s parameters θ_i(i=1-4 and m) from this dataset,in contrast to the conventional "theta-projection model" which employs an extra single correlation for each θ_i(i=1-4 andm),to better accommodate all experimental curves over the wide ranges of temperature and stress *** also put a constraint on the trend of the creep strain that it would monotonically increase with temperature and stress load.A good agreement was achieved between each experimental creep curve and corresponding model’s *** widely used time-hardening and strain-hardening models were performing reasonably well in the new method.

摘要：本文围绕与五位设计人的对话,共同考察成都的设计生态,以此呈现西部设计的经验和状态。通过此考察,重新绘制设计与社会、文化以及地域的种种联系,尝试以批评的眼光看待当代西部城市化进程、互联网浪潮中产生的新思维。

摘要：针对现有多缸内燃机曲轴平衡重设计存在的优化目标不明确、动力学模型简单等问题,以四缸内燃机曲柄连杆机构的虚拟样机为设计平台,对曲轴平衡重进行了动力学仿真分析及优化设计,介绍了包括有限元计算、动力学建模、动态优化设计和结构优化设计的整个设计流程.仿真结果表明,采用虚拟样机对曲轴平衡重进行动态优化设计,设计过程的效率和精度都有所提高;选择不同的优化目标会产生差异很大的最终优化方案.经过比较各种目标的优化结果,建议将曲轴主轴承载荷工作周期内的平均值作为动态优化设计的优化目标.

摘要：针对在轻量化设计的强度计算过程中,现存单工况静态边界条件导致的精度和自动化程度低的问题展开讨论,提出了基于虚拟样机的动态轻量化设计方法.该方法基于虚拟样机技术,对与机体相关的曲柄连杆机构进行动态仿真,仿真结果为强度计算提供动态的边界条件和载荷,从而可以进行多工况的强度计算,并为轻量化设计提供可靠的设计评判依据,提高计算精度的同时改善了设计自动化程度.以单缸内燃机机体为例,介绍了虚拟样机构建、有限元前/后处理,以及轻量化结构改进等方面工作.结果表明,轻量化改进设计方案经小批量试制测试,通过可靠性实验,从而证实了该设计模式的可行性和可靠性.

摘要：为解决在传统凸轮型线优化设计过程中,动力学模型简单、几何精度低、设计流程自动化程度低的问题,利用***平台的参数化建模技术,对设计流程重新进行组织和安排,提出面向参数化样机的凸轮动态优化方法。优化方法在考虑零件柔性的同时,大大提高了优化计算的几何精度及设计流程的自动化程度,计算寻优过程的效率和精度也有不同程度的提高。

摘要：针对运动机构中零件拓扑优化设计的问题,提出一种以动力学仿真分析为基础、以拓扑优化计算为核心的优化设计方案,避免了针对单一工作时间点进行零件拓扑优化设计的风险,保证了复杂运动机构中零件拓扑优化方案的可信度。以发动机配气机构中某零部件为例,介绍了新的设计流程的应用过程。

摘要：实验戏剧以其审美独特性活跃于新时期的戏剧舞台上。本文特以《实验戏剧:二零一一年九月》为例,通过对空间建构的新思维、多维视角的介入、演员和观众之间新的观演关系的形成等问题的研究,探讨演剧形式的创新对于内涵深化的助益,以期达到将舞台实践理论化,为今后实验戏剧的发展提供艺术经验和理论借鉴。

摘要：美国当代诗人约翰·阿什伯利把对现实的思考建基于对艺术世界的沉思上。他的诗很难带有非个人化、政治化、情感化的倾向,很多诗都是艺术化的结果,其中尤以绘画为重。他的诗歌创作与绘画犹如孪生,水乳交融,但并不止于对绘画形式天真般的模仿,而是超越了模仿,展示出与绘画相似的审美意境,其中隐藏着从抽象表现主义画派提取的对无意识的追寻,文本表面的视觉性实为无意识幻觉的呈现,直接指向现实中意义的破碎和主体性的丧失。

摘要：Aiming at the problems in current cam profile optimization processes, such as simple dynamics models, limited geometric accuracy and low design automatization level, a new dynamic optimization mode is put forward. Based on the parameterization modeling technique of MSC. ADAMS platform, the different steps in current mode are reorganized, thus obtaining an upgraded mode called the ＂parameterized-prototype-based cam profile dynamic optimization mode＂. A parameterized prototype（PP） of valve mechanism is constructed in the course of dynamic optimization for cam profiles. Practically, by utilizing PP and considering the flexibility of the parts in valve mechanism, geometric accuracy and design automatization are improved.

摘要：Zero-dimensional perovskite materials,characterized by broadband emission caused by self-trapped excitons,are promising materials for stimuli-responsive and photo-writeable ***,existing research is focused on the effects of structural phase transitions on photophysical properties,and lacks in-depth understanding of the mechanisms of self-trapped excitons ***,we demonstrate that the dehydration reaction in zero-dimensional antimony halide clusters significantly enhances the self-trapped excitons emission without inducing structural phase transition,resulting in a substantial increase in photoluminescence(PL)quantum yield from 3.5%to 91.4%.In-situ X-ray diffraction and PL techniques were employed to shed light on the relationship between the crystal structure and radiative recombination,demonstrating the introduction of rich lattice distortion during the dehydration ***-dependent PL spectra and transient absorption spectra suggest that the lattice distortion causes the moderate electron-phonon coupling strength and high exciton binding energy,facilitating self-trapped excitons to relax from the non-radiative recombination singlet state to the radiative recombination triplet state,corresponding to the enhanced emission *** a proof of concept,several switchable PL applications have been established in scenarios such as anti-counterfeiting,rewritable luminescent paper,and humidity *** finding elucidates the emission mechanism of self-trapped excitons and provides a novel avenue for designing switchable luminescent materials.