CAMP 发表于 2025-3-28 18:21:07
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Lobbying für erneuerbare Energien in the shaping of the material. In the early days of the Bronze Age and the Iron Age the difficulties were both in production and shaping. For many centuries metal-working was laborious and extremely costly. Estimates go that the equipment of a knight and horse in the thirteenth century was of the过滤 发表于 2025-3-29 02:34:51
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Doris Dialer,Margarethe Richterice, materials (especially metals) tend to exhibit a yield stress, above which they deform plastically. This means that there is always a region around the tip of a crack in a metal, where plastic deformation occurs, and hence a stress singularity cannot exist. The plastic region is known as the craMyosin 发表于 2025-3-29 07:48:01
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https://doi.org/10.1007/978-3-531-91461-9ility behaviour. Fracture instability occurs, when upon crack extension, the elastic energy release rate . remains larger than the crack resistance .. The surplus of released energy, (.), can be converted into kinetic energy. This kinetic energy is associated with the rapid movement of the materialLime石灰 发表于 2025-3-29 15:38:21
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http://reply.papertrans.cn/31/3075/307432/307432_48.png缩减了 发表于 2025-3-29 23:58:18
http://reply.papertrans.cn/31/3075/307432/307432_49.png使增至最大 发表于 2025-3-30 07:26:05
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