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  2. Contact mechanics - Wikipedia

    en.wikipedia.org/wiki/Contact_mechanics

    The contributions of J. F. Archard (1957) [12] must also be mentioned in discussion of pioneering works in this field. Archard concluded that, even for rough elastic surfaces, the contact area is approximately proportional to the normal force .

  3. Stress–strain curve - Wikipedia

    en.wikipedia.org/wiki/Stress–strain_curve

    A typical stress–strain curve for a brittle material will be linear. For some materials, such as concrete, tensile strength is negligible compared to the compressive strength and it is assumed zero for many engineering applications. Glass fibers have a tensile strength stronger than steel, but bulk glass usually does not.

  4. 2024 Kursk offensive - Wikipedia

    en.wikipedia.org/wiki/2024_Kursk_offensive

    On 6 August 2024, during the Russian invasion of Ukraine as part of the Russo-Ukrainian War, the Armed Forces of Ukraine launched an incursion into Russia's Kursk Oblast and clashed with the Russian Armed Forces and Russian border guard.

  5. January 16 - Wikipedia

    en.wikipedia.org/wiki/January_16

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