• 2022-11-03
    试求图示刚架的自振频率和主振型。[img=241x295]179d9d46a9acfff.png[/img]
  • 易知 [tex=17.786x2.429]3rk6QHZIPWsDQbN8AgQWeuwn8BWx8FFtUWO797ClNv6Ek5cwhTQ7Dx1AlQs/NFctBMtg/iFRdX0JR9EnCknIEVJ4Z2G6m/X4P2kfmrqsdR4+nDMzhKopZlQfi+chp2Yn[/tex][tex=18.5x3.357]AZGixJD3YkDXI3PjGaedRN7uRRjexOHp2Bi3p/ckHpPLyYlkrOCmq2LWumYVkBtoej4sHufVVv6gPgwzhOQ7VQou67ppll/An1NkxhykT/zP/ItLDrvUaQFVxC7t26GnmVzflvpQ/o+i59X4Z8Qc6lIZuTe6PG1CQnOej0U80hf3PAp9EFLcxwzDwBn5E2v8HF4QDl+9xx2VIXfLsAyMHA==[/tex][tex=7.714x2.786]ZMpInUK7OYCCGYrMpKvuRUNQfYdwQyUq34YyKfdd9zbOq5BBg5SDG9BO+XAAge2n0QH/INpZ0iPgBzsfSSDW5StWKcN3NyMcriveCv/cKsY=[/tex],[tex=10.286x3.0]y/E4Kzl0oSoJVhfOwKtfM7LTUHFkq1PjcyNe+8tqIUpBMxZwTVcGdcboBosptUZ2PIuKAMyiL/3ODp3i+LfT31Xh+yWoHYBwJU3nUOc2heuxOYRCnKMAkVn/BRrYPvC7QBg4oxtfDproRa/CZVm4Tg==[/tex],[tex=18.929x2.429]xho5PHceLz6/Jua2OldV1DRPcjv1lF6eDlKnx3xo9I1IUYqScnm7Xque0D1s1NBOitevS3lUkHi2b7ZPq9LntUf+ZT6q6lKFs/MVvprrrA4=[/tex]。[img=329x220]179d9d86e19175c.png[/img]

    内容

    • 0

      试求图示两端固定梁的前三个自振频率和主振型。[img=279x92]17d1819e99059eb.png[/img]

    • 1

      试求图示体系的自振频率。[img=316x255]17cfe1cd669cbd9.png[/img]

    • 2

      求图示结构的自振频率=和主振型=。不计自重。

    • 3

      试求图8-18所示对称体系的自振频率和振型。各杆[tex=4.571x1.286]NSKjTj7psZYdOS6Y0a7ZyA==[/tex]。[img=381x276]17a15b1984c3360.png[/img]

    • 4

      试求图示体系的第一频率和第一主振型。各杆[tex=1.357x1.286]/iL/B4wMZRZQHTlB2tPOsg==[/tex]相同。[img=246x184]17d17f8e52c5b63.png[/img]